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ChordTimbreChromatic ScalePipaGuqinZhengShengErhuSanxian

One thing about the ruan is unique in this batch: its name did not grow on it — it was taken over from somebody else.

⚠️ A name can only go to one branch — and "pipa" was taken. In the Han and Tang, "pipa" was a generic term for a family of held plucked instruments (as noted on the pipa's page). That family had two branches: | Form | What it came to be called | |---|---| | round body · straight neck | after the other branch took the name → "ruanxian", today the ruan | | pear-shaped body · bent neck | wildly popular in the Tang; it monopolised the name "pipa" | In the Tang the bent-necked, pear-shaped pipa arrived and took over the three characters 「琵琶」; so this straight-necked, round-bodied pipa had to use a person's name instead — Ruan Xian, the member of the third-century "Seven Sages of the Bamboo Grove" who played it best. A name is a scarce resource. When one class of instruments divides, one side must change its surname. Set the batch's three naming stories side by side: ① a name can describe an action (the pipa: *pi* = forward pluck, *pa* = backward) ② a name can change places (the xiao and the di: "today's xiao is the di of antiquity") ③ a name can be taken away (the ruan: the pipa was seized, so it took "ruanxian")

Structure: a round box and a straight neck

Three points:

1. A round soundbox. This is the plainest difference from the pipa: one round, one pear-shaped — and that is exactly the mark by which the two branches divided. 2. A straight neck. No bent-back headstock as on the pipa. 3. Twenty-four frets in equal temperament. Frets are fixed bars crossing all four strings — so one string can produce many notes, the exact opposite of the zheng's one-bridge-one-note.

Bridge, fret, or neither

This figure closes the batch's survey of "how a pitch is taken from a string" — three instruments, three answers:

And the trade-offs can be totalled up: a bridge trades the decision about pitch for volume and speed; a fret keeps many notes per string but turns pitch into steps (slides then need string-bending); neither leaves pitch continuous and puts everything on the left hand.

In the band: the same role as the sheng

The ruan's tone is centred, full, mellow and poetic — and its place in a Chinese orchestra is very much like the sheng's among the winds:

It earns its seat through "blending power" and "easy chord-playing" — not the most attention-grabbing instrument, but the one that fills out the whole section.

This lines up with the "volume is social radius" thread: it is neither the loudest nor the most private — it is the middle one, the one that glues the band together. Modern ruans form a family by register (soprano, small, middle, large, bass), and the middle and large ruans are standard in Chinese orchestras.

Range

阮属弦鸣乐器（拨弦，有品）。现代阮按音区分为高音阮 · 小阮 · 中阮 · 大阮 · 低音阮，定弦各不相同：中阮 G2 · D3 · G3 · D4，大阮 D2 · A2 · D3 · A3，小阮 D3 · A3 · D4 · A4，高音阮 G3 · D4 · G4 · D5，低音阮 G1 · D2 · G2 · D3。音域随品数向上扩展（现代为二十四品），此处按中阮取 G2–D5 示意 —— 各规格音高不同，本图不代表所有阮。记谱即实音。

• About G2–D5 on the middle ruan (indicative). It is an instrument divided by register: want lower, take a large ruan; higher, a small one — one instrument does not cover the whole compass.
• It fills the "middle" slot. Chinese orchestras lacked a middle-low register, and that is the direct reason for the ruan's revival.
• Besides the bass ruan there was once a bowed "la ruan" (modelled on the cello), little used because it did not work well — an attempt to build a bass instrument, and another probe at "what vibrates".

Timbre, and how to hear it

Four cues:

1. Round, full, soft. Four strings across a round box make it rounder and less angular than the pipa. 2. It does not shout. Medium volume, ideally suited to filling in chords and thickening a section. 3. A fretted grain. Of the same family as the pipa: clear beads of sound, though darker. 4. It can play chords. Four strings and twenty-four frets let it sound several notes at once — a practical ability among Chinese plucked instruments.

Playing techniques

• Seated, held to the chest. The body rests on the thighs and against the chest; the left hand stops strings and the right uses a plectrum (before the 1980s finger picks were standard; the higher string tension pushed players toward plectrums).
• Over thirty right-hand techniques: plucking, picking, hooking, wiping, flicking, sweeping, rolling, tremolo and more.
• Over ten left-hand techniques: harmonics, tapping, sliding, pushing, pulling, vibrato and others.
• Slides by pushing. With frets, slides require bending the string to change its tension — the same method as the pipa.
• No settled method yet. The ruan's revival is still young and teaching methods vary.

The family

This family forks on two questions only: what shape is the body · is the pitch taken by a bridge, by a fret, or by fingers. The ruan answers "round + frets" — while its name reminds us of a third thing: classes divide, and after a division the names have to be handed out again.

History

One historical fact stands out: all of the ruan's old scores are lost, and the modern instrument differs so much from the old that it has almost no traditional repertoire. Its repertoire is entirely modern. A two-thousand-year-old instrument with a brand-new repertoire — not an isolated case: the sheng's modern reform and the bianqing's replicas belong to the same category.

Common misconceptions

• "The ruan is a young instrument." Its ancestor goes back to the Han (round body, straight neck, four strings, twelve frets); only the modern rebuilt form (4 strings, 24 frets, steel strings, a full family) is young.
• "The ruan and the pipa are unrelated." They are deeply related: in the Han and Tang both belonged to the class called "pipa"; when the bent-necked branch took the name, the straight-necked branch became "ruanxian". They are siblings after a division.
• "Its name comes from its shape." No — it comes from a person: Ruan Xian, who played it best.
• "The ruan is just a sideman." It does carry the middle register and chords — which is exactly the sheng's role among the winds: the ones that earn their seat by blending are often the least dispensable.
• "It has a rich traditional repertoire." The opposite: lost scores plus a rebuilt instrument mean almost no traditional pieces; the repertoire is contemporary.
• "The bayin says silk, so only silk strings will do." As with the guqin: the bayin records the material of its own time; steel strings are now standard, louder and more stable.

Next

One plucked instrument remains: the sanxian — filling the last cell of the family's table: no bridges, no frets, and a small drum for a body. Its question is how few parts an instrument can have: three strings, one drum, and a neck with nothing on it — so how did it hold down the lead role in opera and narrative song for a thousand years? :::

Sources

• 形制依通行乐器资料：圆形音箱（面板与背板略呈拱形）· 直项（直颈）· 四弦 · 二十四品（按十二平均律排列）· 以拨片弹奏
• 「阮属弦鸣乐器（拨弦）」依 Hornbostel–Sachs 分类
• 「汉唐时期此类乐器原称『琵琶』，记载中明确为『圆形直项』；唐代曲项梨形琵琶大流行并独占了『琵琶』这一名称，这种直柄圆形的琵琶才改称『阮咸』」依通行资料
• 「得名于西晋『竹林七贤』中的阮咸（最擅弹此器）；宋代称『阮』」依通行资料
• 「传统形制为圆体 · 直项 · 四弦 · 十二柱（品）」依汉至魏晋文史资料
• 「1950 年代以来改良为 4 弦 24 品、加大共鸣箱、改用钢弦；仿提琴家族分为高音阮 · 小阮 · 中阮 · 大阮 · 低音阮」依通行资料
• 「定弦：小阮 D3–A3–D4–A4 · 中阮 G2–D3–G3–D4 · 大阮 D2–A2–D3–A3 · 低音阮 G1–D2–G2–D3 · 高音阮 G3–D4–G4–D5」依通行资料
• 「阮的古曲谱均失传，且现代阮与传统阮性能差别很大，故现代阮没有传统乐曲；1987 年刘星的《云南回忆》中阮协奏曲奠定了阮独奏乐器的地位」依通行资料
• 「阮与月琴曾为同器异名直到近代；改良之后两者成为两种乐器」依通行资料
• 「阮属于八音中的丝」依通行资料

Used for fact-checking only; all prose is original.