Registering your song's copyright in India: a step-by-step guide
In India your song is protected the moment you make it, so registration is optional. What it gives you is evidence a court will accept. One song can be three separate works (the music, the lyrics and the recording), each needing its own application, fee and consent letters from your co-writers.
Artist rightsvia IP India (Office of the Controller General of Patents, Designs and Trade Marks)