Hi,
Best institutes to learn music therapy :
Association of Music Therapy, Delhi
Chennai School of Music Therapy, Chennai
MET Institute of Alternative Careers, Mumbai
Nada Centre for Music Therapy, New Delhi
The Indian Institute of Medical Music Therapy-IIMMT, Chennai
Sir Balaji Vidyapeeth, Puducherry.

Music Therapist's earnings are dependent on so many factors like location, business type, therapist experience and qualifications. Newly qualified Music Therapist may earn 20000 to Rs.25,000 per month& even more.
Hope it will help you!