Romani musicians are professional musicians--that is to say that they play the music that people want to hear, wherever they happen to be--For that reason, in Russia, they play Russian tunes, in Romania, they play Romanian, in Hungary--well, you get the idea--to a great degree, the musicians repertoire was the same as non-romany--F
or fiddle at least, the Romanian music is the stuff that we usually associate with Gypsy playing--Miamon Miller did a book on how to play Romanian Folk Fiddle that will help you out considerably--Books by Miamon Miller it is not very expensive--also, Miamon knows about many different ethnic styles of fiddle playing and he teaches as well--