[laomuc]

Mình tìm trên google thì tìm ra vài thứ, bạn xem thử giúp ích gì không?

http://mudcat.org/thread.cfm?threadid=129576

http://www.youtube.com/watch?v=Zkjw9M8uaQ8

http://www.youtube.com/watch?v=kl9E-fe99_A

http://www.youtube.com/watch?v=ebGAOunAygA

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I have discovered a feature that changes my ideas about what the double whistle is for.
It will overblow at the twelfth as well as the octave. So the full scale goes

(left) C D E F / c d e f / g a b c'
(right) C D E F G / c d e f g / g a b c' d'

It's a three-hole pipe with seven holes.
With a bit of ingenuity you can even blow at different pressures for the two sides so they play in different harmonics.
A pretty sophisticated seven quids' worth of peasant woodwork.

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I have checked in the Garland Encyclopedia of World Music, which mentions this instrument in several chapters. Not a "fruli", that's a single-bore whistle - the word for the double one is "dvojnice" in most of the former Yugoslavia, "dvojanka" in Macedonia. Its primary use was for calling cattle.

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Diple, dvojnice, or dvojanke (pluralia tantum; pronounced [dîple̞], [dʋǒ̞ːjnit͡se] and [dʋǒ̞jaːŋke̞]) are a traditional woodwind musical instrument in Croatian, Montenegrin and Serbian music.

The diple may be found as a fipple flute or as a reedpipe, but in either case is distinctive in that it incorporates two bores within one body, and thus creates two notes simultaneously. Generally, the left hand fingers a group of holes on the left side of the body, and the right on its side.

Bagpipes also exist which use a reeded diple as a chanter. Called mih, mjeh, diple with wine skin or only diple, it is played in Istria and Lika, from the Dalmatia islands and coast to Herzegovina. The mih consists of a tanned goat or sheep skin, blowpipe (dulac or kanela) through which the air is blown, and a diple (double chanter) on which the melody and harmony are played simultaneously. The chanter incorporates two single reeds, one in each bore.