In the film Latcho Drom, Tony Gatlif shows the migration of the gypsies from India to Europe as they take their music along with them; the music transforms as they move through time and place; In Crooks' film Siddhartha, based on Herman Hesse's novel, we see Sadhus singing and clapping - similar in sound and style to the Roma at the beginning of Gatlif's film. I'm trying to find out if anyone has written about the possibility the Roma were Indian Sadhus (or related to Sadhus) who were exiled or migrated from northern India about the time of the Buddha or earlier.