60s/70s indian music

hi all! i am looking for 60s and 70s indian music. there are some indian radio stations where i live and i listen to them in my car sometime, and the songs sound like they are from the 70s, but all talk is in a language i dont understand. can you tell me the name of some 70s artists so i can search for them? or maybe a know a site about 70s indian music artists? i like the instrumental stuff, i dont know what genres they play. i have found one song i really love which is called Nayagan - Thenpandi Cheemaiyile, but i cant anything else of that artist Nayagan, maybe its spelled wrong?

hope you can help me! thnx