This was in the duplicate thread I am trying to let drop down:

Subject: RE: Help: Utah Phillips asks re' Chinese Flutes From: GUEST,Banjo Johnny Date: 18-Jul-00 - 02:15 PM

I have a Chinese flute that has an extra buzz-hole in it. You lick a piece of rice paper and plaster it over the hole. When you play, it makes a buzz sound like a kazoo along with the regular flute sound. I use cigarette papers - they don't buzz as nicely but are easier to supply. == Johnny in OKC