Ever tried playing this kind of fiddle..look at the attachment!!!  

I have tried all kind of funny instrument making..including making a whistle with plantain leaves,when i was young..and i have this strange love for these fiddles made out of dried coconut shells..ever tried playing it?I did..once..but it dint have all these controls as shown in this pic..what i got was a coconut shell attached to a rod and string kind of thing and a bow to play with.. and i was always fascinated how that young fellow makes good music out of that..and whenever i try it..i get a screeech vrrrrumm...screeechhoooooo vrummmm..lol..ever tried this?