A koudi. The large hole in the middle is the blowing hole, and the three smaller holes on the top are finger holes. The two open ends of the tube are also used, played with the thumbs.
The koudi (Chinese: 口笛; pinyin: kǒudí; also spelled kou di) is a very small Chinese flute made from bamboo. It is the smallest flute in Chinese Flute family. Its original shape is from prehistorical instruments made with animal bone, while Koudi is made with wood, bamboo or PVC, which is very distinct with the original shape. It was invented in 1971 by the late dizi master Yu Xunfa (俞逊发, 1946–2006).
In 1971, the famous Chinese Flute player Yu Xunfa, who was inspired by original prehistorical instrument, made the first Koudi. This instrument contains one octave, and two years later this instrument went to public by playing the recomposed Romanian folk song Ciocârlia (《云雀》). After that, to expand the range，Xu made the five-hole Koudi, and Bai Chengren (白诚仁) composed Morning of A Miao Village《苗岭的早晨》(MaoLing de ZaoChen). Therefore, Koudi became famous in China. The instrument comes in two sizes. The smaller size, called gaoyin koudi, which is only 5–6 cm in length, has only the holes on the sides, where the thumbs can control the full range of pitch by incrementally opening the holes. The larger size, referred to as zhongyin koudi, is 8–9 cm long and has an additional 2–4 holes on the front (played with the fingers, these holes give slightly more precision to pitch changes). The gaoyin koudi is pitched an octave above the xiao di, whereas the zhongyin koudi is pitched an octave above the bang di. The range of the koudi is about a ninth or tenth, and it can bend notes over the entire range of the instrument.
One of the most famous compositions for the koudi is"MaoLing de ZaoChen" and YunQue (Chinese: 云雀; pinyin: Yún Què, Romanian: Ciocârlia, lit. "The Skylark"). The instrument is also used in Chinese orchestral pieces such as Fei Tian.
Basically, a Koudi has two octaves, but it is not easy to get on the correct pitch.
Notable gaohu players include:
- Hu, Liang (2004). "The Scale of Koudi". Instrument 7: 78–80.
- Wang, Lisheng (2007). Introduction to Koudi. China.
- Koudi audio (click headphones to listen to individual tracks]
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