Although he mostly performs and records as a soloist, Bhattacharya has periodically worked with other influential Indian musicians. Together with guitarist V.M. Bhatt and flutist Ronu Majumdar (both fellow Shankar students), he recorded an album titled The Song of Nature. Bhattacharya also recorded a duo album, Mental Bliss, with tabla player Bikom Ghosh, based on the theories of higher evolution developed by Sri Aurobindo. In the 21st century, he has recorded dozens of albums showcasing the santoor's place in both classical and modern Indian music, demonstrating not only technique but the instrument's evolutionary development. He offers workshops and retreats -- music is also a spiritual practice for him -- and participates widely in humanitarian causes. He has recorded more than 150 albums. In 2017 he released Exotic Santoor in collaboration with tabla master Sabir Khan. ~ Craig Harris, Rovi