What is Desi Music ?

Enough guys ! I am confused, I need some answer, someone please tell me, what is Desi music !!. I know, that Desi music means Indian music, but why don’t you just call it Indian Music ? How does this name, Desi Music come ? where does it come from ?

I thought, they use that term there in the U.S.A, I mean, just there. But no, I can hear that word quiet frequently here too !!  ( I am in India ). Is this a new trend ? or, is there something, technially, unique, as Desi music ?

Well, as of now, I do not know the answer, so, if you guys know the answrer, just tell me, I mean; post a comment here ok ? Or else, I will look for the answer, and update you all soon !!