{
  "schema_version": "v1",
  "id": "listening-to-music-20260817",
  "date": "2026-08-17",
  "title": "视频学习：Listening to Music 第 1、2 课——贝多芬、音乐情绪与器乐/曲式",
  "visibility": "public",
  "classification": {
    "category": "humanities-thought",
    "tags": [
      "视频学习",
      "古典音乐",
      "音乐情绪",
      "音乐要素",
      "器乐与音响",
      "曲式与体裁",
      "主动聆听"
    ]
  },
  "reading_source": {
    "label": "用户于 2026-08-17 提供的《Listening to Music》第 1、2 课学习词条",
    "provenance": "raw_notes 完整保留用户的原始听写、拼写和问号。研究补全以 Open Yale Courses 的 MUSI 112 Lecture 1、Lecture 2 官方课程页与转录为主；贝多芬第三、第五交响曲的作品身份和常用称呼另以 Beethoven-Haus Bonn 的作品资料核对。未把用户未提供的演奏家、录音版本或时间戳补写成事实。"
  },
  "raw_notes": [
    "listening to music 第一集",
    "ludwig beethoven贝多芬",
    "第五交响曲",
    "第九交响曲 ode to joy",
    "英雄交响曲？",
    "命运交响曲？",
    "情绪",
    "positive",
    "secure",
    "unsettle",
    "happy",
    "major and minor chords - front",
    "triad",
    "home pitch ？",
    "depussy clair de lune，moonlight",
    "serene",
    "pulse，beat",
    "dimension of musics：pitch ， duration or rythum",
    "Brass instrument 铜管乐器",
    "trumpet",
    "Percussion instrument 打击乐器",
    "timpani",
    "octave",
    "第2课",
    "song is with lyrics",
    "genre type or kind",
    "symphony，four movements",
    "theme",
    "motive",
    "concerto",
    "pizzicarto",
    "partial",
    "notes"
  ],
  "sources": [
    {
      "id": "yale-musi112-lecture1",
      "title": "MUSI 112 - Lecture 1 - Introduction",
      "url": "https://oyc.yale.edu/music/musi-112/lecture-1",
      "kind": "official university course page and transcript",
      "date": "2026-08-17",
      "evidence_role": "核对第一课的 Beethoven 第五/第九交响曲、Ode to Joy、情绪形容词、major/minor、triad、home pitch、Debussy 的 Clair de Lune、pulse/beat、pitch 与 duration、trumpet、timpani 和 octave。"
    },
    {
      "id": "yale-musi112-lecture2",
      "title": "MUSI 112 - Lecture 2 - Introduction to Instruments and Musical Genres",
      "url": "https://oyc.yale.edu/music/musi-112/lecture-2",
      "kind": "official university course page and transcript",
      "date": "2026-08-17",
      "evidence_role": "核对第二课的 song/piece、lyrics、genre、symphony 的 movements、motive/theme、concerto、pizzicato 和 partials。"
    },
    {
      "id": "beethoven-haus-symphony3",
      "title": "Beethoven-Haus Bonn：Symphony no. 3 (E-flat major), op. 55 (Sinfonia eroica)",
      "url": "https://www.beethoven.de/en/work/view/ag9iZWV0aG92ZW4tdml1cjNyEQsSBHdvcmsYgICArO2t6QkM/Symphony%2Bno.%2B3%2B%26%23040%3BE-flat%2Bmajor%26%23041%3B%2Bop.%2B55%2B%26%23040%3BSinfonia%2Beroica%26%23041%3B",
      "kind": "official composer archive",
      "date": "2026-08-17",
      "evidence_role": "核对“英雄交响曲”对应 Beethoven Symphony No. 3 / Sinfonia eroica。"
    },
    {
      "id": "beethoven-haus-symphony5",
      "title": "Beethoven-Haus Bonn：Symphony no. 5 (C minor), op. 67",
      "url": "https://www.beethoven.de/en/work/view/6260401733894144/Symphony%2Bno.%2B5%2B%28C%2Bminor%29%2Bop.%2B67",
      "kind": "official composer archive",
      "date": "2026-08-17",
      "evidence_role": "核对 Beethoven Symphony No. 5 的作品身份，并记录“Fate Symphony/命运交响曲”是后来的常用称呼且其轶事来源需要谨慎。"
    }
  ],
  "research_completions": [
    {
      "question": "“英雄交响曲？”对应哪一首？",
      "answer": "对应 Ludwig van Beethoven 的 Symphony No. 3 in E-flat major, Op. 55，正式标题中有 Sinfonia eroica，通常译作《英雄交响曲》或《英雄》。它不是第五或第九交响曲。",
      "status": "verified",
      "learning_value": "把 Beethoven 的编号、调性、作品号和常用标题分开记，避免只靠中文绰号检索作品。",
      "source_ids": [
        "beethoven-haus-symphony3"
      ]
    },
    {
      "question": "“命运交响曲？”对应哪一首？",
      "answer": "通常指 Beethoven 的 Symphony No. 5 in C minor, Op. 67。Beethoven-Haus 说明它后来一直被称为 Fate Symphony，但把开头四音解释成 Beethoven 本人说过“命运敲门”的故事，证据并不稳固；因此学习笔记使用“常用称呼”，不把它当作 Beethoven 的正式标题。",
      "status": "verified",
      "learning_value": "记住“作品编号”和“后来的通俗称呼”是两层信息；听课时先按 Fifth Symphony 检索。",
      "source_ids": [
        "beethoven-haus-symphony5",
        "yale-musi112-lecture1"
      ]
    },
    {
      "question": "Beethoven 第五和第九交响曲为什么带来不同的情绪？",
      "answer": "Lecture 1 将第五交响曲的开头与 negative、anxious、unsettled、fateful 等感受联系起来，将第九交响曲的相关片段与 positive、happy、secure 联系起来，并引导学生注意 major/minor、旋律的 conjunct/disjunct、方向以及是否尽早给出 home pitch。第九交响曲的相关主题是 Schiller 诗歌《Ode to Joy》的谱曲。这里是课堂的主动聆听框架，不是“某个调式必然产生某种情绪”的普遍定律。",
      "status": "paraphrase",
      "learning_value": "描述情绪时同时写出听觉线索，避免只写“第五悲伤、第九快乐”的标签。",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "question": "home pitch 是什么？",
      "answer": "home pitch 是课堂中的直观说法，较正式的术语是 tonic pitch 或 tonic（主音）：音乐会围绕它产生归属感。Lecture 1 用 Beethoven 第五和第九的开头对比说明，延迟或较早听到主音会影响听者对稳定与不稳定的感受。",
      "status": "verified",
      "learning_value": "听一段音乐时先尝试哼出或找出它的 tonic，再判断旋律是否回到这个中心。",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "question": "dimension of music 是 pitch、duration 还是 rhythm？",
      "answer": "Lecture 1 明确把音乐的两个基本维度说成 pitch 与 time/duration：pitch 可以想成高低的垂直轴，duration/time 主要沿时间展开。Rhythm 或 beat 是时间组织和拍感的重要内容，但在这段讲解里不是与 pitch 并列的第二条总轴。",
      "status": "verified",
      "learning_value": "复习时先用“音高 + 时间/时值”搭骨架，再把 rhythm、beat、meter 放到时间维度中细分。",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "question": "depussy clair de lune，moonlight，serene 应如何整理？",
      "answer": "作曲家拼写是 Claude Debussy（德彪西），作品名是 Clair de Lune，英文意为 Moonlight，中文通常译作《月光》。Lecture 1 用它引出 serene（宁静的）等听觉感受，并提示其 pulse/beat 较不突出、音乐线条较舒缓。",
      "status": "verified",
      "learning_value": "把人名、作品名、译名和听感分别记忆：Debussy → Clair de Lune → Moonlight → serene。",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "question": "song、piece、genre、symphony 和 movement 怎么区分？",
      "answer": "第二课指出，song 通常需要 lyrics/text；没有歌词的古典器乐作品更适合称为 piece、composition 或 work。Genre 是 type or kind。Symphony 是一种体裁，通常由四个彼此独立但互相联系的 movements 组成；每个 movement 是一个相对独立的乐章。",
      "status": "verified",
      "learning_value": "介绍器乐作品时先说 work/piece 或具体 genre，不把所有古典器乐曲都叫 song。",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "question": "motive 和 theme 有什么区别？concerto 又是什么？",
      "answer": "Motive 是较短的音乐细胞或“种子”，作曲家可以用它建构后续材料；theme 通常是更长、更有歌唱性的旋律。第二课还介绍 concerto：通常为三乐章体裁，由独奏者与管弦乐队形成对话或来回的音乐关系。",
      "status": "verified",
      "learning_value": "听 Beethoven 第五时先找开头四音的 motive，再寻找较长的 theme；听 concerto 时同时追踪独奏者和乐队。",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "question": "pizzicarto 和 partial 应如何改写？",
      "answer": "pizzicarto 的标准拼写是 pizzicato，指弦乐器用手指拨弦而不是用弓拉奏。partial 在这节课中通常以复数 partials 出现，指一个音中同时存在的部分频率，也可放在 harmonic series/overtones（泛音列/泛音）的语境中理解；不同乐器的音色与哪些 partials 更突出有关。",
      "status": "verified",
      "learning_value": "把 pizzicato 记成演奏技术，把 partials 记成声音/声学结构，不把两者都当成一般“音符”。",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    }
  ],
  "keywords": [
    {
      "term": "Beethoven：第五、第三与第九交响曲",
      "definition": "用作品编号和标题区分 Beethoven 的 Fifth Symphony、Eroica（第三）与 Ninth Symphony（含 Ode to Joy 主题）。",
      "category": "古典音乐作品",
      "usefulness": "把作曲家、编号、标题、调性和常用称呼分层记忆，避免用“英雄/命运”单独检索。",
      "source_ids": [
        "yale-musi112-lecture1",
        "beethoven-haus-symphony3",
        "beethoven-haus-symphony5"
      ]
    },
    {
      "term": "音乐情绪线索",
      "definition": "课堂用 positive、happy、secure 与 negative、anxious、unsettled 等词描述听者的初步反应，再追问产生反应的音乐因素。",
      "category": "音乐聆听",
      "usefulness": "写情绪时同时记录调式、方向、旋律连接方式、主音和律动等可听线索。",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "term": "major / minor chords and triads",
      "definition": "大调/小调和弦及三和弦，是课堂用来比较明亮与阴暗听感的和声入口。",
      "category": "和声",
      "usefulness": "先听辨 major 与 minor，再记住 triad 是三个音构成的基本和弦形态；不要把情绪对应绝对化。",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "term": "home pitch / tonic pitch",
      "definition": "音乐围绕并趋向稳定的主音；home pitch 是课堂上的直观称呼，tonic pitch 是更正式的术语。",
      "category": "音高与调性",
      "usefulness": "主动聆听时尝试找出“回家”的音，再观察旋律何时给出或暂时避开它。",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "term": "pitch and duration/time",
      "definition": "课堂所说的音乐两条基本维度：音高，以及时间/时值；rhythm 和 beat 属于时间组织中的重要概念。",
      "category": "音乐结构",
      "usefulness": "用两条轴整理听觉信息：声音高低与声音持续、排列和运动的时间关系。",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "term": "Clair de Lune / Moonlight",
      "definition": "Debussy 的钢琴作品名，法语 Clair de Lune 意为 Moonlight；课堂以 serene 和不突出的 pulse 引导听感。",
      "category": "作品与听感",
      "usefulness": "将作品身份、英文译名和听觉印象绑定，而不是只背一个中文标题。",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "term": "brass / percussion instruments",
      "definition": "管弦乐器家族：brass instrument 是铜管乐器，percussion instrument 是打击乐器；trumpet 和 timpani 是课堂中的例子。",
      "category": "器乐",
      "usefulness": "听作品时先辨认乐器家族，再记录具体音色和它在结构中的作用。",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "term": "octave",
      "definition": "八度音程；课堂用频率关系说明高低两个相邻同名音之间的结构关系。",
      "category": "音程与声学",
      "usefulness": "把 octave 与 fifth、fourth 作为听辨音程的入口，不只记中文名称。",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "term": "song / piece / genre",
      "definition": "song 通常带有歌词或文本；piece/work/composition 可指器乐作品；genre 是 type or kind，即体裁或类型。",
      "category": "音乐词汇",
      "usefulness": "介绍音乐时先判断有没有 lyrics，再选择 song、piece 或具体 genre。",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "term": "symphony and movements",
      "definition": "Symphony 是交响曲体裁，通常包含四个 movements（乐章）；乐章彼此独立又互相补充。",
      "category": "曲式与体裁",
      "usefulness": "听交响曲时按 movement 建立地图，不把整部作品压缩成一个主题。",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "term": "motive / theme",
      "definition": "Motive 是短小的音乐细胞或动机；theme 是通常更长、更有歌唱性的主题旋律。二者都可以作为 melody 的组成层次。",
      "category": "旋律与发展",
      "usefulness": "先找短动机，再追踪它如何在不同乐章或声部中被重复、变形和扩展。",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "term": "concerto",
      "definition": "协奏曲体裁，通常以独奏者和管弦乐队的对话/对抗为核心，并通常包含三个乐章。",
      "category": "曲式与体裁",
      "usefulness": "听 concerto 时分别跟踪 soloist、orchestra、theme 和 accompaniment 的角色变化。",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "term": "pizzicato",
      "definition": "弦乐演奏法：用手指拨弦，而不是用弓拉奏。",
      "category": "演奏技术",
      "usefulness": "听到短促、清晰的拨弦声时，尝试判断它是否是 pizzicato，并和 arco 对比。",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "term": "partials / overtones",
      "definition": "一个声音中同时存在的部分频率或泛音；不同 partials 的相对突出程度参与形成乐器的音色。",
      "category": "声学与音色",
      "usefulness": "把音高、音量与音色分开：同一个基频也可能因泛音组合不同而听起来像不同乐器。",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    }
  ],
  "vocabulary": [
    {
      "id": "ludwig-van-beethoven",
      "term": "Ludwig van Beethoven",
      "translation": "路德维希·范·贝多芬；贝多芬",
      "language": "en",
      "part_of_speech": "proper noun",
      "definition": "The full name of the composer associated in these lessons with the Fifth, Ninth, and Eroica symphonies.",
      "category": "古典音乐人名",
      "levels": [
        "CEFR-B1"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户原始听写“ludwig beethoven贝多芬”；规范写法为 Ludwig van Beethoven。",
      "source_locator": "Lecture 1, Chapter 4；Beethoven-Haus works archive",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1",
        "beethoven-haus-symphony3"
      ]
    },
    {
      "id": "symphony",
      "term": "symphony",
      "translation": "交响曲",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "A large-scale orchestral genre; in the lecture it is described as generally having four movements.",
      "category": "曲式与体裁",
      "levels": [
        "CEFR-B2",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“第五交响曲”“第九交响曲”“symphony，four movements”。",
      "source_locator": "Lecture 2, Chapter 1",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "id": "ode-to-joy",
      "term": "Ode to Joy",
      "translation": "《欢乐颂》；《欢乐颂歌》",
      "language": "en",
      "part_of_speech": "proper noun",
      "definition": "The title commonly used for the Schiller text set in the final movement of Beethoven's Ninth Symphony.",
      "category": "作品与文化",
      "levels": [
        "CEFR-B2"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“第九交响曲 ode to joy”。",
      "source_locator": "Lecture 1, Chapter 4",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "eroica",
      "term": "Eroica",
      "translation": "英雄的；《英雄交响曲》",
      "language": "it",
      "part_of_speech": "proper adjective/title",
      "definition": "The title element in Beethoven's Sinfonia eroica, commonly identifying Symphony No. 3, Op. 55.",
      "category": "古典音乐作品",
      "levels": [
        "CEFR-B2",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“英雄交响曲？”。",
      "source_locator": "Beethoven-Haus Bonn, Symphony no. 3, Op. 55",
      "status": "verified",
      "source_ids": [
        "beethoven-haus-symphony3"
      ]
    },
    {
      "id": "fate-symphony",
      "term": "Fate Symphony",
      "translation": "命运交响曲",
      "language": "en",
      "part_of_speech": "noun phrase",
      "definition": "A common later nickname for Beethoven's Symphony No. 5; it is not used here as the work's formal title.",
      "category": "作品与文化",
      "levels": [
        "CEFR-B2"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "notes": "The familiar anecdote about Beethoven saying fate knocks at the door is treated cautiously in the Beethoven-Haus source.",
      "source_context": "用户记录“命运交响曲？”。",
      "source_locator": "Beethoven-Haus Bonn, Symphony no. 5, Op. 67",
      "status": "verified",
      "source_ids": [
        "beethoven-haus-symphony5"
      ]
    },
    {
      "id": "major",
      "term": "major",
      "translation": "大调的；大调",
      "language": "en",
      "part_of_speech": "adjective/noun",
      "definition": "A major mode or chord quality, discussed in the lecture as one contrast with minor.",
      "category": "和声",
      "levels": [
        "CEFR-B2",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“major and minor chords - front”。",
      "source_locator": "Lecture 1, Chapter 4",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "minor",
      "term": "minor",
      "translation": "小调的；小调",
      "language": "en",
      "part_of_speech": "adjective/noun",
      "definition": "A minor mode or chord quality, discussed in contrast with major.",
      "category": "和声",
      "levels": [
        "CEFR-B2",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“major and minor chords - front”。",
      "source_locator": "Lecture 1, Chapter 4",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "chord",
      "term": "chord",
      "translation": "和弦",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "Two or more pitches heard together as a harmonic sonority; the lesson introduces major and minor chords.",
      "category": "和声",
      "levels": [
        "CEFR-B2",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“major and minor chords”。",
      "source_locator": "Lecture 1, Chapter 4",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "triad",
      "term": "triad",
      "translation": "三和弦",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "A chord built from three pitches; the lecture uses the term when introducing major and minor chords.",
      "category": "和声",
      "levels": [
        "CEFR-C1",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“triad”。",
      "source_locator": "Lecture 1, Chapter 4",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "home-pitch",
      "term": "home pitch",
      "translation": "归属音；主音",
      "language": "en",
      "part_of_speech": "noun phrase",
      "definition": "The intuitive classroom term for the pitch around which music gravitates; formally related to tonic pitch.",
      "category": "音高与调性",
      "levels": [
        "CEFR-B2",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“home pitch ？”。",
      "source_locator": "Lecture 1, Chapter 4",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "tonic-pitch",
      "term": "tonic pitch",
      "translation": "主音；主音音高",
      "language": "en",
      "part_of_speech": "noun phrase",
      "definition": "The stable tonal center toward which a passage can gravitate or resolve.",
      "category": "音高与调性",
      "levels": [
        "CEFR-C1",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "Lecture 1 connects home pitch with the more formal term tonic pitch.",
      "source_locator": "Lecture 1, Chapter 4",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "claude-debussy",
      "term": "Claude Debussy",
      "translation": "克洛德·德彪西；德彪西",
      "language": "en",
      "part_of_speech": "proper noun",
      "definition": "The French composer named in Lecture 1 in connection with Clair de Lune.",
      "category": "古典音乐人名",
      "levels": [
        "CEFR-B1"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户原始听写“depussy”。",
      "source_locator": "Lecture 1, Chapter 4",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "clair-de-lune",
      "term": "Clair de Lune",
      "translation": "《月光》",
      "language": "fr",
      "part_of_speech": "proper noun",
      "definition": "A work by Debussy; the French title means Moonlight.",
      "category": "作品与听感",
      "levels": [
        "CEFR-B2"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“clair de lune，moonlight”。",
      "source_locator": "Lecture 1, Chapter 4",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "serene",
      "term": "serene",
      "translation": "宁静的；平静的",
      "language": "en",
      "part_of_speech": "adjective",
      "definition": "Calm, peaceful, and untroubled; used by a student in the lecture to describe Clair de Lune.",
      "category": "情绪与听感",
      "levels": [
        "CEFR-B2"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“serene”；Lecture 1 uses it as a listening response to Clair de Lune.",
      "source_locator": "Lecture 1, Chapter 4",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "pulse",
      "term": "pulse",
      "translation": "脉搏；拍感；律动",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "The underlying sense of regular motion or beat in music; Lecture 1 describes Clair de Lune as languid in pulse.",
      "category": "节奏与时间",
      "levels": [
        "CEFR-B2"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“pulse，beat”。",
      "source_locator": "Lecture 1, Chapter 4",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "beat",
      "term": "beat",
      "translation": "节拍；拍点",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "A felt or marked pulse in music; it is related to but not identical with the broader idea of rhythm.",
      "category": "节奏与时间",
      "levels": [
        "CEFR-B1",
        "CEFR-B2"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“pulse，beat”；Lecture 1 contrasts strong beats in pop music with the understated beat of Clair de Lune.",
      "source_locator": "Lecture 1, Chapters 1 and 4",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "pitch",
      "term": "pitch",
      "translation": "音高",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "The perceived highness or lowness of a sound; one of the two broad dimensions emphasized in Lecture 1.",
      "category": "音乐结构",
      "levels": [
        "CEFR-B2",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“dimension of musics：pitch”。",
      "source_locator": "Lecture 1, Chapter 5",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "duration",
      "term": "duration",
      "translation": "持续时间；时值",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "The amount of time a sound or musical event lasts; paired with pitch as a broad dimension of music in Lecture 1.",
      "category": "音乐结构",
      "levels": [
        "CEFR-B2",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“duration or rythum”；Lecture 1 says pitch and duration/time.",
      "source_locator": "Lecture 1, Chapter 5",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "brass-instrument",
      "term": "brass instrument",
      "translation": "铜管乐器",
      "language": "en",
      "part_of_speech": "noun phrase",
      "definition": "An instrument family whose sound is produced through a vibrating air column; trumpet is an example from the lesson.",
      "category": "器乐",
      "levels": [
        "CEFR-B2"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“Brass instrument 铜管乐器”。",
      "source_locator": "Lecture 1, Chapter 5",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "trumpet",
      "term": "trumpet",
      "translation": "小号；喇叭",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "A brass instrument; Lecture 1 identifies the rising brass line in Also Sprach Zarathustra as trumpet.",
      "category": "器乐",
      "levels": [
        "CEFR-B1"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“trumpet”。",
      "source_locator": "Lecture 1, Chapter 5",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "percussion-instrument",
      "term": "percussion instrument",
      "translation": "打击乐器",
      "language": "en",
      "part_of_speech": "noun phrase",
      "definition": "An instrument family in which sound is produced by striking, shaking, or otherwise exciting a resonant body; timpani is an example here.",
      "category": "器乐",
      "levels": [
        "CEFR-B2"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“Percussion instrument 打击乐器”。",
      "source_locator": "Lecture 1, Chapter 5",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "timpani",
      "term": "timpani",
      "translation": "定音鼓",
      "language": "en",
      "part_of_speech": "plural noun",
      "definition": "Orchestral kettle drums; Lecture 1 identifies the percussion instrument in Also Sprach Zarathustra as timpani.",
      "category": "器乐",
      "levels": [
        "CEFR-C1"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“timpani”。",
      "source_locator": "Lecture 1, Chapter 5",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "octave",
      "term": "octave",
      "translation": "八度；八度音程",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "An interval spanning a 2:1 frequency relationship in the lecture's introductory acoustics discussion.",
      "category": "音程与声学",
      "levels": [
        "CEFR-B2",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“octave”。",
      "source_locator": "Lecture 1, Chapter 5",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "song",
      "term": "song",
      "translation": "歌曲",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "A musical work normally understood in the lecture as having lyrics or text; purely instrumental classical works are better called pieces or works.",
      "category": "音乐词汇",
      "levels": [
        "CEFR-A2",
        "CEFR-B1"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“song is with lyrics”。",
      "source_locator": "Lecture 2, Chapter 1",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "id": "lyrics",
      "term": "lyrics",
      "translation": "歌词",
      "language": "en",
      "part_of_speech": "plural noun",
      "definition": "The words or text sung in a song.",
      "category": "音乐词汇",
      "levels": [
        "CEFR-B1"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“song is with lyrics”；Lecture 2 says a song requires lyrics/text.",
      "source_locator": "Lecture 2, Chapter 1",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "id": "piece",
      "term": "piece",
      "translation": "乐曲；作品",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "A general term for a musical composition, especially useful for a work that is not a song with lyrics.",
      "category": "音乐词汇",
      "levels": [
        "CEFR-B1"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "Lecture 2 contrasts song with piece, composition, and work.",
      "source_locator": "Lecture 2, Chapter 1",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "id": "genre",
      "term": "genre",
      "translation": "体裁；类型",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "A type or kind of musical work.",
      "category": "曲式与体裁",
      "levels": [
        "CEFR-B2"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“genre type or kind”。",
      "source_locator": "Lecture 2, Chapter 1",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "id": "movement",
      "term": "movement",
      "translation": "乐章",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "An independent yet related section of a multi-movement work such as a symphony or concerto.",
      "category": "曲式与体裁",
      "levels": [
        "CEFR-B2",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“symphony，four movements”。",
      "source_locator": "Lecture 2, Chapter 1",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "id": "theme",
      "term": "theme",
      "translation": "主题；主题旋律",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "A comparatively extended, recognizable musical idea, often more lyrical than a motive.",
      "category": "旋律与发展",
      "levels": [
        "CEFR-B2",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“theme”；Lecture 2 compares theme with motive.",
      "source_locator": "Lecture 2, Chapter 2",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "id": "motive",
      "term": "motive",
      "translation": "动机；音乐动机",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "A short musical cell or germ from which a composer can build further material.",
      "category": "旋律与发展",
      "levels": [
        "CEFR-C1",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“motive”；Lecture 2 uses Beethoven's four-note opening as an example.",
      "source_locator": "Lecture 2, Chapter 2",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "id": "concerto",
      "term": "concerto",
      "translation": "协奏曲",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "A genre centered on an exchange between a soloist and an orchestra; it is generally described in the lecture as having three movements.",
      "category": "曲式与体裁",
      "levels": [
        "CEFR-C1",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户记录“concerto”。",
      "source_locator": "Lecture 2, Chapter 2",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "id": "pizzicato",
      "term": "pizzicato",
      "translation": "拨弦；拨弦奏法",
      "language": "it",
      "part_of_speech": "adverb/adjective used as a performance direction",
      "definition": "A string technique in which the player plucks the strings with a finger rather than drawing the bow.",
      "category": "演奏技术",
      "levels": [
        "CEFR-C1",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户原始听写“pizzicarto”；标准拼写是 pizzicato。",
      "source_locator": "Lecture 2, Chapter 2",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "id": "partials",
      "term": "partials",
      "translation": "分音；泛音成分",
      "language": "en",
      "part_of_speech": "plural noun",
      "definition": "Component frequencies present within a sounding tone; the lecture discusses them as part of the harmonic series or overtones.",
      "category": "声学与音色",
      "levels": [
        "CEFR-C1",
        "Academic/PhD"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "medium",
      "source_context": "用户原始听写“partial”；Lecture 2 uses the plural partials.",
      "source_locator": "Lecture 2, Chapter 3",
      "status": "verified",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "id": "note",
      "term": "note",
      "translation": "音符；音",
      "language": "en",
      "part_of_speech": "noun",
      "definition": "A written or heard musical sound; the exact intended context of the user's final note remains open.",
      "category": "音乐词汇",
      "levels": [
        "CEFR-B1",
        "CEFR-B2"
      ],
      "level_basis": "expert_estimate",
      "level_confidence": "low",
      "notes": "保留用户的“notes”听写；目前不把它扩展为新的技术概念。",
      "source_context": "用户记录“notes”。",
      "source_locator": "第 2 课词条末尾；具体视频位置待回看",
      "status": "provisional",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    }
  ],
  "reading_contexts": [
    {
      "id": "lecture-one-listening-cues",
      "summary": "第一课把主动聆听变成一组可追踪的听觉问题：Beethoven 第五与第九的情绪差异、major/minor、triad、旋律是 conjunct 还是 disjunct、旋律方向、home pitch，以及 Debussy《月光》的 serene 感和不突出的 pulse/beat；随后用 pitch 与 duration/time、trumpet、timpani 和 octave 建立音乐结构与器乐入口。",
      "work": "MUSI 112 Lecture 1 — Introduction",
      "writing_use": "用英文描述一段音乐的情绪时，先给出听感，再用 major/minor、direction、home pitch、pulse 或 instrument 等可听证据说明 why。",
      "register": "学习笔记；官方转录校正后的音乐英语词汇",
      "source_context": "用户第 1 课原始词条与官方课程转录的对应关系。",
      "source_locator": "Lecture 1, Chapters 4–6",
      "vocabulary_ids": [
        "ludwig-van-beethoven",
        "symphony",
        "ode-to-joy",
        "major",
        "minor",
        "chord",
        "triad",
        "home-pitch",
        "tonic-pitch",
        "claude-debussy",
        "clair-de-lune",
        "serene",
        "pulse",
        "beat",
        "pitch",
        "duration",
        "brass-instrument",
        "trumpet",
        "percussion-instrument",
        "timpani",
        "octave"
      ],
      "source_ids": [
        "yale-musi112-lecture1",
        "beethoven-haus-symphony3",
        "beethoven-haus-symphony5"
      ]
    },
    {
      "id": "lecture-two-genre-instrument-map",
      "summary": "第二课从命名和分类开始：有 lyrics 的作品可以称为 song，没有歌词的古典器乐作品更适合称为 piece/work；genre 是 type or kind。随后建立 symphony 的四个 movements、concerto 的独奏者与乐队关系、motive 与 theme 的长短层次，并通过 pizzicato 与 partials 进入演奏技术和声学。",
      "work": "MUSI 112 Lecture 2 — Introduction to Instruments and Musical Genres",
      "writing_use": "介绍一首作品时依次说明它是 song 还是 piece、属于什么 genre、由几个 movements 组成，再指出 motive/theme 和器乐技术。",
      "register": "音乐入门课程；体裁、旋律和声学术语",
      "source_context": "用户第 2 课原始词条与官方课程转录的对应关系。",
      "source_locator": "Lecture 2, Chapters 1–3",
      "vocabulary_ids": [
        "song",
        "lyrics",
        "piece",
        "genre",
        "symphony",
        "movement",
        "theme",
        "motive",
        "concerto",
        "pizzicato",
        "partials",
        "note"
      ],
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    }
  ],
  "quotes": [],
  "reading_comprehension": {
    "summary": "这两课把“听音乐”从模糊感受推进成可复述的分析。第一课用 Beethoven 第五与第九、Debussy《月光》展示情绪如何与 major/minor、旋律方向、conjunct/disjunct、home pitch 和 pulse 联系；同时建立 pitch 与 time/duration 两条基础维度，并开始辨认 trumpet、timpani、octave。第二课继续把听到的东西命名为 song/piece、genre、symphony、movement、concerto、motive、theme、pizzicato 和 partials。",
    "implications_label": "主动聆听方法",
    "concept_connections": [
      "情绪词不是终点：positive、secure、happy、serene、unsettled 之后，要追问具体的调式、方向、主音、旋律连接方式和律动。",
      "home pitch 与 tonic pitch 连接了直观听感和正式音乐术语；“回到家”的稳定感可以作为主动聆听的检索动作。",
      "pitch 与 time/duration 构成两条基础轴；rhythm、beat 和 pulse 要放在时间组织中理解，而不是把 rhythm 直接替换成第二条总轴。",
      "motive 是短小种子，theme 是较长的旋律材料；听交响曲时可以追踪一个动机如何跨乐章或声部返回。",
      "partials/overtones 解释了为什么同一个音高由 trumpet、French horn 或其他乐器演奏时会有不同音色；音高与音色不是同一件事。"
    ],
    "market_implications": [
      "本次内容是音乐与英语学习，没有市场信息，不生成市场结论。"
    ]
  },
  "market_update": {
    "as_of": "2026-08-17",
    "section_title": "资料更新",
    "summary": "本条是古典音乐与音乐英语学习记录，没有当前市场信息。",
    "points": []
  },
  "knowledge_updates": [
    {
      "original_idea": "英雄交响曲和命运交响曲只是还没想起来的作品名。",
      "verdict": "已补全但需保留称呼边界",
      "updated_view": "英雄通常指 Beethoven Symphony No. 3, Eroica；命运通常指 Symphony No. 5，但“Fate Symphony”是后来的常用称呼，不等同于正式标题。",
      "practical_change": "主动回忆时先说 Symphony No. 3 / No. 5，再补 Eroica / Fate 这样的称呼。"
    },
    {
      "original_idea": "major and minor chords - front 是一个完整术语。",
      "verdict": "听写已校正",
      "updated_view": "课程中的概念是 major versus minor；front 不作为音乐术语保留。",
      "practical_change": "把 major、minor、chord、triad 分成四张小卡，分别说明调式/和弦质量和三音结构。"
    },
    {
      "original_idea": "home pitch 只是一个普通的“回家的音”。",
      "verdict": "概念已补全",
      "updated_view": "home pitch 是课堂直观说法，对应 tonic pitch/tonic（主音），是音乐产生稳定归属感的中心。",
      "practical_change": "每次听新作品时尝试哼出 tonic，并记录它何时出现、何时被延迟。"
    },
    {
      "original_idea": "音乐的两个维度是 pitch 和 rhythm。",
      "verdict": "需要精确化",
      "updated_view": "本课讲的是 pitch 与 time/duration；rhythm、beat、pulse 是时间维度中的组织方式和拍感。",
      "practical_change": "用“音高轴 + 时间/时值轴”记笔记，再在第二条轴下记录 rhythm、beat、meter。"
    },
    {
      "original_idea": "partial 和 notes 都可以直接按“音符”理解。",
      "verdict": "概念已分开",
      "updated_view": "partials 是一个声音里的部分频率/泛音成分；note 是普通的音符或音，用户最后的 notes 仍缺具体语境。",
      "practical_change": "复习时分别画出一个基音与 partials 的关系，并把 notes 标为待回看词条。"
    },
    {
      "original_idea": "古典器乐作品也可以统称为 song。",
      "verdict": "术语已校正",
      "updated_view": "第二课把 song 与 lyrics/text 联系起来；没有歌词的作品更适合称为 piece、work 或 composition。",
      "practical_change": "介绍音乐时先判断有没有歌词，再选择 song、piece 或具体 genre。"
    }
  ],
  "next_actions": [
    {
      "action": "分别回听 Beethoven 第五和第九交响曲的课堂片段",
      "why": "把 positive/secure/happy 与 unsettled 等情绪词绑定到 major/minor、旋律方向、conjunct/disjunct 和 home pitch。",
      "evidence_required": "每首作品各记录一个情绪判断、一个可听线索和 tonic 是否尽早出现。",
      "guardrail": "把这是课堂示范中的听感写清楚，不把 major=快乐、minor=悲伤当成绝对规则。"
    },
    {
      "action": "回听 Debussy 的 Clair de Lune",
      "why": "用 serene、pulse、beat、pitch 和 duration 描述“为什么听起来宁静”，而不是只背 Moonlight。",
      "evidence_required": "一段 3—5 句英文复述，至少包含 serene、pulse、pitch 或 direction。",
      "guardrail": "先写个人听感，再区分课程转录中已经说过的内容与自己的解释。"
    },
    {
      "action": "用 Beethoven 第五的开头练习 motive/theme 区分",
      "why": "第二课把四音开头作为 motive，把较长的旋律作为 theme；这是理解音乐发展的关键入口。",
      "evidence_required": "指出一个短动机、一个较长主题，并说明它们是否在后续乐章或声部中返回。",
      "guardrail": "没有听到完整作品时，不声称已经完成跨乐章追踪。"
    },
    {
      "action": "整理第 2 课的器乐和声学词汇",
      "why": "把 brass、trumpet、percussion、timpani、pizzicato、partials 和 octave 从词表变成可听辨的声音线索。",
      "evidence_required": "每个词补一个声音、动作或结构例子；partials 画出基音与泛音的简单关系。",
      "guardrail": "暂不填写演奏家、录音年份或具体版本，除非另有来源。"
    }
  ],
  "risk_guardrails": [
    "原始听写必须保留；depussy、rythum、pizzicarto、partial、unsettle 等不规范形式只作为记忆证据，规范词形写在旁边。",
    "“英雄”“命运”是常用称呼或标题元素，检索时优先使用作品编号和正式标题。",
    "major/minor 与情绪的关系是本课的听觉示范，不应扩展成无条件的心理学规律。",
    "symphony 通常四乐章、concerto 通常三乐章是课程中的一般描述，不把 generally 读成所有作品都例外为零。",
    "partials、overtones、note、pitch、chord 和 triad 属于不同层次，不压缩成一个模糊的“音符”概念。",
    "未提供演奏家、录音版本和个人回听时间戳；这些信息保持空缺，不用猜测补齐。"
  ],
  "review_cards": [
    {
      "id": "listening-to-music-20260817-beethoven-emotion",
      "prompt": "不看笔记，Beethoven 第五和第九交响曲在课堂示范中分别引出哪些情绪词？至少说出两个听觉线索。",
      "answer": "第五被联系到 negative、anxious、unsettled 等感受，第九被联系到 positive、happy、secure；线索包括 major/minor、旋律方向、conjunct/disjunct，以及 home pitch 是否尽早出现。",
      "kind": "summary",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "listening-to-music-20260817-home-pitch",
      "prompt": "home pitch 和 tonic pitch 的关系是什么？听一段音乐时如何主动寻找它？",
      "answer": "home pitch 是课堂直观说法，tonic pitch/tonic 是较正式的主音术语；可以哼唱或寻找一段旋律反复趋向、停留或解决的稳定音。",
      "kind": "summary",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "listening-to-music-20260817-two-dimensions",
      "prompt": "课程所说的音乐两个基本维度是什么？rhythm、beat 和 pulse 放在哪里？",
      "answer": "两个基本维度是 pitch 与 time/duration；rhythm、beat 和 pulse 是时间组织与拍感相关的细分概念。",
      "kind": "summary",
      "source_ids": [
        "yale-musi112-lecture1"
      ]
    },
    {
      "id": "listening-to-music-20260817-song-piece-genre",
      "prompt": "什么时候用 song，什么时候用 piece/work？genre 是什么意思？",
      "answer": "Song 通常带 lyrics/text；没有歌词的器乐作品更适合称为 piece、work 或 composition。Genre 就是 type or kind，即音乐体裁或类型。",
      "kind": "summary",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "id": "listening-to-music-20260817-motive-theme",
      "prompt": "motive 和 theme 的区别是什么？用 Beethoven 第五的开头说明。",
      "answer": "Motive 是短小的音乐细胞或种子；Beethoven 第五开头的四音材料是典型的 motive。Theme 通常更长、更有歌唱性，能形成较完整的旋律段落。",
      "kind": "summary",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "id": "listening-to-music-20260817-pizzicato-partials",
      "prompt": "pizzicato 和 partials 分别描述演奏动作还是声音结构？",
      "answer": "Pizzicato 是弦乐拨弦演奏法；partials 是一个声音内部的部分频率/泛音成分，与乐器音色有关。",
      "kind": "summary",
      "source_ids": [
        "yale-musi112-lecture2"
      ]
    },
    {
      "id": "listening-to-music-20260817-work-titles",
      "prompt": "“英雄交响曲”和“命运交响曲”分别对应什么？如何避免称呼混淆？",
      "answer": "英雄通常指 Beethoven Symphony No. 3, Eroica；命运通常指 Symphony No. 5。复习时先说编号和正式作品名，再补充常用称呼，并记住 Fate 是后来的称呼。",
      "kind": "keyword",
      "source_ids": [
        "beethoven-haus-symphony3",
        "beethoven-haus-symphony5"
      ]
    }
  ]
}
