Iboga music is amazing....I hated it when I first heard it (a few hours before I first took ibogaine) but the Universe told me to listen anyway.... and I am sooooo glad I did as I simply cannot imagine my healing iboga experience without that music....dare I say the music was at least 55.6789% of the reason that trip was so amazing and regenerating. Now I love it and just by listening to that music I can be transported back to the same place.
Try out a load of Bwiti (ibogaine music) or maybe even throat singers like 'Anda union' (Mongolian) & or 'Huun Huur Tu' (Tuva)
As for Indian classical music which I throughly endorse the study of for serious trippers (it's a study in hinduism and kind of animistic in that sruti/Indian scales (which are tuned differently to the west) are sort of considered as entities : Pandit Ravi Shankar is definitely decent but many would consider Pandit Nikhil Banergee better (sitar).
I'd also recommend Pandit Ali Akbar Khan (Sarod) Ustad Amjad Ali Khan (sarod), Pandit Hariprasad Chaurasia (bansuri), Zia Mohiuddin Dagar (Rudra Veena) & check out ragas played on the surbahar (Bass sitar) which is cool. That will keep you busy for a bit