The Doyra reference article from the English Wikipedia on 24-Apr-2004
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Doyra

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Doyra (also dojra) is an Uzbek percussion musical instrument, which is something intemediate between a drum and a tambourine. When playing doyra an artists helds it in his left hand and flicks (hits) it with his right hand fingers. The most interesting thing about it is that the artist doesn't make these hits with his hand itself, but rather fastens each finger about it's neighbour and then suddenly releases it (like we do when we snap our fingers). As a result he can produce loud, rapid and very sharp sounds. You can often hear about doyra that it isn't an attendant instrument, but a solo one.