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PitchTimbreBianzhongBianqingTangguDaluo (great gong)

The bronze drum has the word "drum" in its name and not one scrap of skin on it.

It is an instrument cast in bronze: head and body are one single casting — no skin, no tacks, no hoop, nothing that can be tightened or loosened. So although it is called a drum, it is classified as an idiophone: what vibrates is the bronze itself, not a membrane.

⚠️ It forces the same question as the last few entries, and gives the most direct answer yet: when an instrument looks like a drum, is named like a drum, and is used like a drum — on what grounds do we say it is not one? On the test. This site has had exactly one test from the first page: what vibrates? | | Tanggu | Bronze drum | |---|---|---| | Looks like | a drum | ⭐ also like a drum | | Name | "drum" | ⭐ "drum" | | How it is made | wooden shell + stretched skin | ⭐ one bronze casting | | What vibrates | ⭐ the skin (membranophone) | ⭐⭐ the bronze body (idiophone) | | Bayin | hide | ⭐ metal | "The name comes from how it looks; the classification comes from what vibrates." This is also the third time this site has met a name that misleads (after the nao and the paigu).

Structure: a drum with no skin

Three points:

1. Five parts, one casting. Head · chest · waist · foot · ear — flat rim, curved waist, one head, hollow, open at the base, four ears. The body carries mould seams: the evidence that it was cast. 2. ⭐ Its shape is an acoustic structure. The sources put it plainly: the head and the swollen chest form an arched sound-storing and resonating chamber; the sound passes through the cylindrical waist and leaves through the foot, which flares like the mouth of a horn. It is a sound pipe from head to foot. 3. Two orders of magnitude in size. From a handspan to over a metre across, from tens of kilos to hundreds; the largest surviving example is about 1.65 m across and 300 kg. It is the largest instrument on this site.

The patterns on the head

This is the page's second central figure.

A bronze drum's head is a picture. And every picture on it starts at the centre:

• The sun motif: a disc of light with rays. ⭐ It began as the mark left by the casting gate — ground and polished into a raised disc, then combined with sun worship into art. It is the earliest ornament on bronze drums and the only one found throughout their history.
• Frogs: cast in relief, four, five or six of them; ⭐ "stacked frogs" — a small frog on a big one's back, up to three or four deep. (Frogs and rain-making belong together.)
• Figurative scenes: on Shizhaishan-type drums the chest carries feathered dancers, boat races, fishing and sacrifice — not decoration but a two-thousand-year-old record of southern life.

⭐⭐ And the rings may be more than ornament. The tuning research raises a striking suggestion: one of the ways a bronze drum vibrates is that the head moves in concentric bands, alternately up and down along nodal circles; and the dense rings on the head may show that the makers were already using the principle of nodal lines. In other words: those circles may be marks cut for tuning.

It was never only an instrument

Of every entry on this site, the bronze drum has the smallest share of "instrument" in its identity:

• It is power. Monopolised by chiefs and nobles, treated as a precious treasure or ritual object, and even an object of sacrifice itself — hence "where the drum is, the authority is."
• It is wealth. The plainest evidence is in the *Later Book of Han*: "Ma Yuan, on campaign in Jiaozhi, took the bronze drums of the Luoyue and cast them into horses." ⭐ It was worth melting down. (And that sentence is the first appearance of the word "bronze drum" in Chinese.)
• It is a signal. "Striking it could gather people to deliberate, and it served as a military command" — and the sources list it alongside "ritual object" and "treasure" as a means of communication.
• It is a ritual object. Early drums were hidden in caves or buried, not to be struck at will — ⭐ once an instrument is forbidden to be played casually, it is no longer only an instrument.

⭐⭐ Rule ㉔: in the Bronze Age, an instrument was never only an instrument. And the bronze drum and the bianzhong are exactly parallel cases:

⭐ The difference lies in "afterwards": the bianzhong became evidence in a museum, while the bronze drum stepped down from "symbol of power" to "folk instrument" and is still in use.

How it is tuned: a trade of its own

The pitch of a bronze drum is largely settled at the casting — but it is not unadjustable. On the contrary, tuning a bronze drum was once a profession.

⭐⭐ And a Qing writer, Qu Dajun in his *New Talks of Guangdong*, describes it as a whole trade:

The ordinary founders of bronze drums could not tune them. Whenever a drum came out of the mould, a "bronze-drum master" had to be invited to tune it. He would quench the drum's navel (the sun motif at the centre) and its surroundings with a little chemical, and give it a few strokes of a cold hammer — seemingly with no effort, a dozen strokes or so and it was done. It was a highly skilled craft.

⭐ Points worth carrying away:

1. Tuning moves in two directions: adding and subtracting. Gouging is subtracting (the same family as grinding a bianqing thinner); hanging attachments is adding mass — and adding is something neither the bianzhong nor the bianqing can do. (Nor is there a screw to turn as on a paigu: a bronze drum has no mechanism, only material to add or remove.) 2. The tuner and the founder were two different people. The caster could not tune; the tuner was sent for — the "last mile" of an instrument is completed by another trade. 3. On a bronze drum, a note can literally be stuck on. Which is the same idea as the next entry, the elephant-foot drum, tuned with sticky rice.

Timbre, and how to hear it

Four cues:

1. Low, thick, very long-ringing. The old books outdo one another: Song writers say it "rings so loud it rivals the alligator drum" and that its "sound startles the village"; Qing writers say it is "heard for miles" and "shakes the clouds". And one lovely line: "hung and struck over water, its sound is neither bell nor drum." 2. ⭐⭐ Each drum gives two notes. The general reference works say a bronze drum "has no definite pitch" — meaning it has no standard pitch — yet on any single drum the centre and the edge give two definite notes. The 1982 tuning study measured them: on Wanjiaoba-type drums the two are a minor second apart (109 cents, within 3 cents of the just-intonation semitone), while Shizhaishan-type drums favour perfect fifths and minor thirds. ⚠️ "No definite pitch" does not mean "no pitch" — a point that is unusually easy to misread here. 3. Centre low, edge bright — and this direction is sourced. A soft beater on the centre gives a thick, low sound; a bamboo slip on the edge gives a crisp, short one. 4. The length of the ring can be handled by hand — by a second player with a resonator (below).

Playing techniques

⭐⭐ A bronze drum takes two people.

• The first holds a soft beater in one hand and a bamboo slip in the other — the soft beater on the centre (thick and low), the slip on the edge (crisp and short). ⭐ One person carrying two completely different strikers, because they must produce two different colours.
• The second holds a resonator, aimed at the open foot, and slides it back and forth — ⭐⭐ to reinforce the resonance and to control how long the ring lasts. That is "adjusting the tail in real time" — the same need as muting a daluo with the hand, except that here it is delegated to a second person.
• The drum is struck while hanging, so that the open foot can speak.
• Its most common "performance" is a ritual, not a stage. Sacrifice, festival, wedding, funeral — it is used, not admired.
• It is still playing today. The Zhuang, Yao, Miao, Dong, Bouyei, Sui, Gelao and Wa still use it; the Zhuang bronze-drum custom is on the national intangible-heritage list.

The family

⭐ This table opens up the two roads hidden inside the word "drum": what is skinned is a membranophone (tanggu, bangu); what is cast solid is an idiophone (bronze drum) — the same word, a completely different vibrating body.

History

One thing in this history no other entry has: its casting technique was once lost, and then learned again. A two-thousand-year-old instrument was "re-learned" in the 1990s.

Common misconceptions

• "A bronze drum is a drum." ⚠️ It is not a membranophone: it has no skin — the head is a plate of cast bronze. There is one test: what vibrates? The bronze body (idiophone). The name comes from how it looks; the classification comes from what vibrates.
• "The books say it has no definite pitch, so it has no pitch." ⚠️ Those are two different things. "No definite pitch" means no standard pitch (you cannot say "this drum is in C"); but on any single drum the centre and the edge give two definite notes — measured at a minor second (109 cents) on Wanjiaoba drums and mostly perfect fifths and minor thirds on Shizhaishan drums. "No standard pitch" ≠ "no definite note."
• "It looks like a drum, so the bayin puts it under 'hide'." ⚠️ No: the bayin classifies by material, and a bronze drum is bronze — so it is metal. The "hide" class holds only skinned instruments (tanggu, bangu). ⭐ Which is exactly why the bayin and Hornbostel–Sachs ask two different questions: one asks what it is made of, the other what vibrates.
• "It is cast, so the pitch is fixed at the mould and cannot be changed." ⚠️ It can — and tuning it was a trade: quenching, cold hammering, scraping the walls, hanging attachments, gouging the back of the head thinner. The Qing *New Talks of Guangdong* even names the specialist — the "bronze-drum master" — and notes that the founder himself could not do it.
• "The bronze drum is a museum object." It is still in use: Zhuang, Yao, Miao, Dong, Bouyei, Sui, Gelao and Wa communities use it in festivals and rituals today; the Zhuang custom is national intangible heritage; and a 6.68 m record drum was cast in 2018.

Next

Percussion now has twelve entries. The bronze, stone, wood and hide lines are all in place — but the "play while dancing" line still has only one member (the naobo, played while walking).

The next entry takes that as far as it goes: the elephant-foot drum. It is slung across the body and played while dancing — and to tune it you do not use a wrench, you use sticky rice.

And it asks a very concrete question: when the only way to change an instrument's pitch is to stick something onto its head, does that actually work? :::

Sources

• ⚠️ 名称与归类：「铜鼓整体呈圆墩状，曲腰中空，无底，由鼓面 · 胸 · 腰 · 足 · 耳五部分构成」；「总体特征是通体皆铜，平面曲腰，一头有面，中空无底，侧附四耳」依通行文物资料
• ⚠️⚠️ 它不是膜鸣乐器：铜鼓由青铜铸造、鼓面与鼓腔一体铸成，没有任何蒙皮 —— 振动体是青铜本体，故属体鸣（本站因此不给它 HS 次级编号：未见来源对其次级归类有统一说法）
• ⭐⭐ 音高（有来源，且含义要说清）：通行乐器资料明确写「铜鼓无固定音高」；另有资料写「铜鼓属于无调打击乐器，无音阶变化」；⚠️ 这里的「无固定音高」不是"发不出确定的音"，而是「没有统一的音高标准」—— 见下面测音一条
• ⭐⭐ 1982 年测音研究：文化部文学艺术研究院中国音乐研究所与云南省博物馆 · 广西壮族自治区博物馆的研究人员对云南和广西出土的典型铜鼓进行了测音研究：万家坝型「鼓心与鼓边厚度有明显的差异，敲击鼓心与鼓边可得到两个不同频率的基音」，两音间音程关系为小二度，音分值 109 音分（与纯律大半音标准值 112 音分仅差 3 音分）；石寨山型「两音间的音程关系，与万家坝铜鼓不协和的小二度关系不同，而以纯五度 · 小三度协和音程占主导地位，其声律倾向接近于三分损益律」依 1982 年铜鼓测音研究
• ⭐ 「鼓面按同心圆节线形成的不同区块此上彼下地往复振动；鼓面晕圈密布，可能反映了人们已经运用了节线的原理」依测音研究
• ⭐⭐ 调音法：「原始调音法指铜鼓铸成以后，通过药物淬火 · 冷锤敲打 · 刮削鼓壁等三个步骤调音的方法」；「发展到冷水冲型铜鼓的时候，在两对鼓耳之间另设一对半环小耳，在这种半环小耳上悬挂附件来控制音响」；「到北流型 · 灵山型铜鼓时……主要是采用改变鼓面厚度的办法，将鼓面背部铲薄，以达到预想的效果」依铜鼓研究资料
• ⭐⭐ 「据清人屈大均《广东新语》所载，一般铸造铜鼓的工匠都不会调音，每当铜鼓铸造出来后，必须延请铜鼓师来调音。铜鼓师用小量药物淬及鼓脐（鼓面中心太阳纹）和鼓的周围，挥冷锤敲打几下，看起来用力轻松，只敲十余锤就可以了。这是一项技术含量很高的技艺，不是一般工匠可以掌握的」依《广东新语》
• ⭐⭐ 演奏方法：「铜鼓需两人演奏。演奏时，将鼓悬挂于支架上，一人一手持软槌，一手持竹条演奏：软槌击鼓心，发音浑厚 · 低沉；竹条敲击鼓边，发音清脆 · 短促。另一人持共鸣桶，对着鼓底，来回抽动，以增加共鸣和控制余音的长短」依通行乐器资料
• ⭐ 古代对音量的形容：宋·陈旸《乐书》「击之响亮，不下鸣鼍」· 宋·王象之《舆地纪胜》「声骇村落」· 清·檀萃《滇海虞衡志》「声闻数里」· 清·张燮《东西洋考》「振响遏云」依各书
• ⭐ 古代对音色的形容：明·曹学佺《蜀中广记》「悬于水上，用棡木槌击之，声极圆润」；另有「悬而击之，下映以水，其声非钟非鼓」依文献
• 「铜鼓大小不一，直径从十余厘米至一米以上，重量自数十斤至数百斤不等」；「北流型云雷纹大铜鼓以鼓面直径 1.65 米 · 重 299 公斤为现存最大古代铜鼓」（另有资料记「高 67.5 · 面径 166 厘米 · 重 300 公斤」，两说基本一致）依通行文物资料
• 「鼓面多铸太阳纹 · 蛙纹 · 翎眼纹 · 云纹 · 乳钉纹 · 栉纹 · 游旗纹等；部分鼓边饰有蛙 · 龟 · 牛 · 马等立体造型；鼓身常饰几何纹与动物纹，并设有鼓耳及合范缝」依通行文物资料
• ⭐ 「太阳纹由光体和光芒构成，是最早出现于铜鼓上的最基本的装饰纹样，也是唯一贯穿于铜鼓历史始终的纹样」；⭐ 「太阳纹原本是铜鼓浇铸口留下的残痕，经反复打磨修饰成为一个圆饼形的突出体，再结合太阳崇拜形成」依文物资料
• ⭐ 「蛙纹是最富特色的一种装饰，均作立体浮雕状，有四只 · 五只 · 六只不等；最有趣味的是叠蛙（累蹲蛙），有多达三四层的」依通行文物资料
• 「石寨山型铜鼓……其中的羽人舞蹈 · 划船 · 捕鱼 · 祭祀等写实画像，再现了当时南方民族的社会生活习俗」依文物资料
• ⭐⭐ 「八型」：万家坝型（春秋中期，已知最早；鼓面窄小 · 鼓胸特别膨胀 · 足短 · 器壁浑厚 · 器表粗糙，有的通体无纹）· 石寨山型（战国至西汉，滇文化）· 冷水冲型（花纹密集高度图案化，立体装饰丰富）· 遵义型（过渡形态，鼓面立体蛙消失而有"蛙爪"纹）· 麻江型（鼓形矮扁，受汉文化影响明显，是现今我国南方少数民族普遍使用的铜鼓）· 北流型（西汉至唐，鼓形高大，鼓面大于鼓胸并有"垂檐"，多饰云雷纹，鼓面背部通常有调音铲痕）· 灵山型（扁耳，三足蛙，多见累蹲蛙）· 西盟型（云南西盟佤族地区，鼓身近直筒，常见三累蹲蛙甚至四蛙叠踞）依通行文物资料
• 「1976 年云南楚雄彝族自治州万家坝出土 5 个铜鼓，鉴定是 2700 年前的古物，也是中国现存最早的铜鼓」依考古资料
• ⭐ 「『铜鼓』一词最早见于《后汉书·马援传》：『马援出征交趾，得骆越铜鼓，铸为马』」依《后汉书》
• ⭐⭐ 「铜鼓原是一种打击乐器，以后又演化为权力和财富的象征；它为民族首领贵族所独占，被视之为一种珍贵的重器或礼器，因此也成为被祭祀的对象」；「击鼓可聚众议事，亦作军事号令，有『鼓在权在』之说」；「早期作为祭祀法器与礼器，多藏于洞穴或埋于地下，不得随意击用」依通行文物资料
• ⭐ 「从铜釜演化而来的铜鼓，一开始就以打击乐器的身份出现。后来成了一些民族首领的礼器和重器，也用作传信工具。随着历史的发展……作为打击乐器和传信工具仍然存在」依铜鼓研究资料
• 「唐宋以后，其宗教与政治功能逐渐弱化；明清时期多转为民间节庆 · 婚丧仪式中的乐器，延续至今，在苗 · 瑶 · 壮 · 侗 · 布依 · 水 · 仡佬 · 佤等民族中仍有传承与使用」依通行文物资料
• ⭐ 「清代铸造工艺失传；20 世纪 90 年代韦启初 · 韦启参兄弟采用沙模铸造法复兴传统铸鼓技术」依通行资料
• 「中国现存古代铜鼓逾 1500 面，广西现存 700 余面」；「壮族铜鼓习俗被列入国家级非物质文化遗产」；「2023 年铜鼓文化（河池）生态保护区通过国家验收」；「2018 年铸造的直径 6.68 米双面鼓创吉尼斯世界纪录」依通行资料
• 「唐代温庭筠《河渎神祠》记录了南方水边民族将铜鼓作为祭祀礼器用于竞渡赛神的场面」；「唐代刘恂《岭表录异》：『蛮夷之乐有铜鼓』」依文献
• ⚠️ 它没有皮，所以八音里不在「革」 —— 按材料（青铜）归金

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