The oud

Its name means wood — a fretless lute that can sing in between the notes

Related

LuteMandolinGuqinDutarSantur

⭐⭐ The main line: its name means wood

「Its name, from Arabic ʿūd (wood), refers to its aloe wood belly, in contrast to the skin bellies of earlier lutes.」

The oud's name simply means 「wood」——because its belly is wooden, while those of its predecessors were skinned.

⭐⭐ The site's seventh naming pole: the material (the proverb name djembe · the transliteration bili · the mistaken name a cappella · the ancestor name mbira · the debased original kora/jali · the Western misnomer djun djun · the action name balafon · the material name oud). ⭐⭐ An instrument named after a piece of wood in its own body —— and that piece of wood is exactly where it parts company with its forebears: the name records a technical substitution (against the site's 「changing bodies」 lineage: the TB-303's circuitry · the 808's transistors · the electric violin's vanishing body · the oud's swap from skin belly to wood belly).

⭐⭐ And it is the ancestor of European classical strings: 「the Arabic al-ʿūd entered French as le luth, and thence English as lute」 —— ⭐⭐ oud → lute → vihuela → guitar: ⭐⭐ the largest single instrument export on the site: a Middle Eastern instrument became the ancestor of the whole Western string family (against the site's 「instruments that changed the world」: the yodel coined the word nostalgia · the banjo went round the earth and came home · the oud exported as the ancestor of Western classical strings).

⭐⭐ Fretless is not an omission but a capability

⭐⭐ Being fretless is the 「fundamental difference」 from the Western lute —— ⭐⭐ the whole instrument is designed for microtonality: 「in Arabic and Turkish music, both of which use micro-tonal intervals (maqam and makam) that lie between the notes of the Western chromatic scale」.

⭐⭐ A fingertip on a smooth fingerboard can land anywhere between two semitones —— ⭐⭐ the site's extreme case of 「intonation is a position, not a scale」 (against the Moog's voltage control: pitch as a continuous quantity · auto-tune: pitch quantised to a grid · the oud: pitch given continuously by the physical position of a finger).

⭐⭐ And whether the oud had frets is an open question: medieval theorists discussed frets on the oud in relation to the intervals of the maqāmāt, yet 「Surviving pictures of the oud show no frets」 —— ⭐⭐ the object has no frets while the theory discusses its frets —— the site's classic case of theory running ahead of the artefact.

⭐⭐ The oldest time anyone measured an instrument in fingers

⭐⭐ In the 9th century the philosopher al-Kindi gave the first complete description of the oud's construction in the *Risāla fī-l-Luḥūn wa-n-Nagham*: total length thirty-six joint fingers (three ashbār) · width fifteen fingers · depth seven and a half fingers · six fingers behind the bridge · thirty fingers of string · ten fingers of neck · twenty fingers of vibrating body.

⭐⭐ Every number is a finger —— because the maker's hand was the ruler. ⭐⭐ The oldest piece of anthropometry on the site: an instrument's dimensions written in fingers, a thousand years before anyone wrote them in metres.

⭐⭐ The body is a circle cut in half: 「as if it had been a round body drawn with a compass which was cut in two in order to extract two ʿūds」 —— ⭐⭐ 「draw a circle with a compass, then split it in two」 —— the common geometric origin of every bowl-shaped resonator (against the balafon's gourds · the marimba's tuned tubes · the oud's bowl of many wooden staves).

⭐⭐ Three acts of migration, and one crucial act

⭐⭐ 「Adding a pegbox」 was a structural liberation —— pre-Islamic lutes had no pegbox (buntuk); the Islamic era added it (against the site's 「one small part changes a whole family」: the 808's out-of-spec transistors · the balafon's gourd membrane · the oud's pegbox).

⭐⭐ 「Adding frets」 was the crucial act of that export: ⭐⭐ the East kept the fretless board, the West developed frets —— one lute split in two (⭐⭐ the site's 「one source, two fates」 specimens: two New Orleans · two New Orleans jazes · one instrument divided east and west).

⭐⭐ Ziryab (9th century) carried the oud into al-Andalus and reshaped both its body and its tuning —— ⭐⭐ a singer altered an instrument, and the instrument then rewrote Western music.

⭐⭐ A set of strings named by pitch: the four pre-Islamic strings were bamm · maṭlaṭ · maṭnā · zīr (low to high), and a fifth string, ḥād (「sharp」), was added in the 9th century to complete two octaves —— ⭐⭐ among the site's earliest instrument 「staves」 (against the bells reading a lü · the ocarina reading intervals · the oud's string names are its note names).

⭐⭐ Form at a glance

⭐ Body: deep pear shape · a bowl back assembled edge to edge from many thin staves of hardwood (walnut, mahogany, rosewood, maple) · a soundboard usually of spruce or cedar, pierced with a central round hole and carved wooden roses · short fretless neck · a pegbox bent sharply back (the pegs sit in its sides, raising string tension at the nut, and it is the instrument's visual signature) · 11 strings (five paired courses plus a single bass) · HS 321.321-6 (the same class as the sitar and the European lute —— ⭐⭐ the identical HS number is itself a piece of historical evidence).

⭐⭐ Two schools: the Arabic oud (heavier, deeper, louder) and the Turkish oud (lighter, brighter, tuned a tone higher).

⭐ The pick is called a risha: traditionally cut from an eagle feather, today plastic or horn.

⭐ The oldest one: the oldest surviving oud is thought to be in Brussels, at the Museum of Musical Instruments.

⭐ Players: Farid al-Atrash · Munir Bashir · Riad al-Sunbati · Anouar Brahem · Naseer Shamma · Marcel Khalife · Dhafer Youssef; listed by UNESCO in 2022 (Iran and Syria, reference 01867).

HS class

Lineage and destinations

The oud's compass is not a row of cells cut by frets but a continuous field of available pitch: the left hand's position can vary within any small interval, so the usable pitches are denser than on any fretted instrument. The usual span is roughly C2–C6 (most repertoire sits in C3–C5), built from five paired courses plus a single bass string —— the five pairs lie in consecutive fourths, preserving the ancient succession of bamm · maṭlaṭ · maṭnā · zīr, with the single string added below to widen the range beyond the four-course arrangement. ⭐⭐ And with no frets, a note's intonation is not fixed by the position of a metal strip but by the exact place the left fingertip takes on the smooth fingerboard: on one string, two finger positions less than a semitone apart are both correct —— ⭐⭐ that is the physical basis of the maqam system, where microtonal intervals (quarter tones, commas) are not decorative slides but the very pitches on which a different modal system depends. ⭐⭐ Against a fretted instrument the oud reaches more distinct pitches in the same length and can deviate further from twelve-tone equal temperament —— at the price that every note must be located by the ear in the moment, with no 「this fret」 to point at. ⭐⭐ The Arabic and Turkish schools tune a whole tone apart, so the same maqam sits at a different absolute pitch on each.

Sources

• ⭐⭐ 乌德琴史（Wikipedia Oud + Britannica Oud + worldinstruments 乐器数据库 + UNESCO 非遗名录 01867 + 11 世纪 Ibn al-Haytham 与 9 世纪 al-Kindi 的记述）——⭐⭐ 主线：名字是木头：「Its name, from Arabic ʿūd (wood), refers to its aloe wood belly, in contrast to the skin bellies of earlier lutes」——⭐⭐ 全站命名第七极：材料名（谚语名 djembe · 译音名 bili · 误会名 a cappella · 祖先名 mbira · 贬低原词 kora/jali · 西方伪名 djun djun · 动作名 balafon · 材料名 oud）——⭐⭐ 一件乐器的名字来自它身上的一块木头，而这块木头正是它与前代（皮腹琴）分界的地方——名字记录的是一次技术替换（对照全站「换身」谱系：TB-303 的电路 · 808 的元器件 · 电提琴的琴身消失 · 乌德琴从皮腹换成木腹）。⭐⭐ 欧陆后裔链：「the Arabic al-ʿūd entered French as le luth, and thence English as lute」——⭐⭐ 乌德琴 → 鲁特琴（lute）→ 维韦拉（vihuela）→ 吉他；⭐⭐ 全站最庞大的一次「乐器出口」：一件中东乐器成了整个西方弦乐家族的祖先（对照全站「乐器影响世界」谱系：约德尔造出 nostalgia 一词 · 班卓琴绕地球回非洲 · 乌德琴出口成整个西方古典弦乐的祖宗）。⭐⭐ 无品 = 能唱半个音：「no frets and a smaller neck」是它与西方鲁特琴的「根本差别」；⭐⭐ 无品不是省略，是能力——「in Arabic and Turkish music, both of which use micro-tonal intervals (maqam and makam) that lie between the notes of the Western chromatic scale」——⭐⭐ 整把琴为微分音而设计：左手指腹在无品指板上按出的位置可以落在两个半音之间，这是全站「音准不是刻度而是位置」的极端标本（对照马特诺电压控制：音高是连续量 · auto-tune：音高被量化到刻度 · 乌德琴：音高由手指的物理位置连续给出）。⭐⭐ 最早的一次「用手指量尺寸」：9 世纪哲学家 al-Kindi 在《Risāla fī-l-Luḥūn wa-n-Nagham》里给出乌德琴的完整尺寸记述——全长三十六个「关节指」= 三个 ashbār，宽十五指，深七指半，琴桥后留六指，弦长三十指，琴颈十指，琴体二十指，⭐⭐ 每个数字都是「手指」——因为制琴师的手就是尺子（⭐ 全站最古老的一次「人体测量学」：一件乐器的规格以手指为单位写下来，比「米」早了一千年）。⭐⭐ 琴体是一只被劈开的圆：「that the back (soundbox) be well rounded and its thinning (kharṭ) done towards the neck, as if it had been a round body drawn with a compass which was cut in two in order to extract two ʿūds」——⭐⭐ 「用圆规画一个圆，然后把它劈成两半」——这是弦乐箱体的几何起点，也是全站所有「碗形共鸣腔」家族的共同祖先（对照巴拉风的葫芦腔 · 马林巴的共鸣管 · 乌德琴的多片木肋拼碗）。⭐⭐ 形制：梨形深琴体 · 碗形背由多片硬木薄肋（胡桃 · 桃花心木 · 紫檀 · 枫）边对边胶合 · 面板多用云杉或雪松并镂出圆形音孔与木制音花（rose）· 短颈无品 · 弦轴箱后折（弦轴设在轴箱两侧，增加弦在琴枕处的张力，是它的视觉签名）· 11 弦（5 组双弦 + 1 根单低音）；HS 321.321-6（复合弦鸣 · 拨弦 · 与 sitar、欧洲鲁特琴同科）——⭐⭐ HS 编号完全相同这件事，本身就是一条历史证据。⭐⭐ 两大学派：阿拉伯式（更重、更深、更响）与土耳其式（更轻、更亮、定音高一个全音）。⭐⭐ 拨片叫 risha：传统以鹰羽制成，今用塑料或角质。⭐ 前史：前伊斯兰的波斯 · 阿拉伯 · 美索不达米亚弦乐器只有三弦、小琴体、无弦轴；伊斯兰时代琴体加大、加第四弦、并加上弦轴箱（buntuk）——⭐⭐ 「加一个弦轴箱」是一次结构性的解放（对照全站「加一个小零件改变一整族乐器」：808 的 out-of-spec 晶体管 · 巴拉风的葫芦膜 · 乌德琴的弦轴箱）。⭐⭐ barbat 是它的直系前身（7 世纪波斯已见）；古乐器有四个名字：bamm · maṭlaṭ · maṭnā · zīr（按音高从低到高），9 世纪加第五弦 ḥād（"sharp"）以凑满两个八度——⭐⭐ 「一套以音高命名的弦」，是全站最早的乐器「谱表」之一（对照 bianzhong-tuning 钟读律制 · 埙读音程 · 乌德琴的弦名就是音名）。⭐⭐ maqam 与札尔：中世纪理论家讨论乌德琴上的品格与 maqāmāt 的音程关系；「Surviving pictures of the oud show no frets, but it is possible that both fretted and fretless types were used」——⭐⭐ 「品格存不存在」是文献与图像各说各话的一个悬案：实物无品格，理论家却在讨论它的品格（⭐⭐ 全站最典型的一次「理论跑在实物前面」）。⭐ Ziryab（9 世纪，波斯歌手）把乌德琴带入安达卢西亚并改造其形制与调弦——⭐⭐ 一个歌手改造了一件乐器，然后乐器改写了整个西方音乐（对照全站「演奏者即发明者」谱系：Talk box 的三种争名 · Ziryab 的 Ziryab 式新调式（曾被称作「Ziryab's mode」）——⭐⭐ 今天在伊朗与叙利亚以 UNESCO 非遗的名义被保护（2022 年第 17 届 · 编号 01867））。⭐⭐ 三幕迁移：美索不达米亚（长颈鲁特琴）→ 伊斯兰黄金时代（al-ʿūd 成为文明核心乐器，al-Kindi 与 al-Farabi 用它写理论）→ 欧洲（经安达卢西亚与十字军东征，13 世纪欧洲鲁特琴成形，欧洲工匠加上品格以配合西方音阶）——⭐⭐ 「加品格」是这次出口的关键动作——⭐⭐ 东方保留无品，西方发展有品——同一种琴分道扬镳（⭐⭐ 全站「同一源头的两种命运」标本：两个新奥尔良 · 两种新奥尔良的爵士 · 一只琴分成东西两半）。⭐⭐ 最古老的一把：现存最古老的乌德琴被认为藏在布鲁塞乐器博物馆。⭐ 代表演奏家：Farid al-Atrash · Munir Bashir · Riad al-Sunbati · Anouar Brahem · Naseer Shamma · Marcel Khalife · Dhafer Youssef。
• ⭐⭐ 对照线 ——lute（鲁特琴）：⭐⭐ 乌德琴的直系欧洲后裔——加了品格，改了弦数，从「唱微分音」变成「唱西方音阶」（对照全站「出口后的变种」：talk box 的美式欧式之争 · 乌德琴加品格 = 一次功能性的分家）；mandolin（曼陀林）：同样是「出口后变声」的鲁特琴亲戚；guqin：⭐⭐ 中国七弦琴的「无品 + 音准由指腹决定」与乌德琴同构——⭐⭐ 两种古老大弦乐器的共同技术前提：无品（⭐⭐ 全站「无品两大阵营」：东方（古琴 · 乌德琴）以指腹定位，西方（鲁特琴 · 吉他）以品格定位——一根手指代替了一排金属丝）；dutar / dombra / tanbur：⭐⭐ 中亚与西亚的鲁特琴族兄弟（对照 dunun 三兄弟 · kora 一人分身 —— 「同族命名学」在欧亚大陆上的另一组样本）；santur：⭐⭐ 另一种「弓弦变体」——波斯桑图尔与中国的扬琴是同源近亲，弓代替了拨（对照全站「同族两种激发方式」：弦鸣弓 vs 拨 vs 击）。
• ⭐ 制作注记 —— 条目写作日期 2026-10-21；inst 站世界乐器子类条目；SVG ×2 中英各一；range 两版逐字相同；实例取 chinafolk C3 参照

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