According to Simon Broughton (Songlines), they do not need to go back to the sources – that is what they are (Simon Broughton, Songlines)
Parno Graszti (white horse) music comes from North-East Hungary representing a certain local musical dialect. Their instruments range from the accoustic guitar, tambura, double bass, accordion, and spoons to a churn and improvisation. It is a party revelling in dance, singing and passion.