Rajarshi Cocco Mitter is currently playing the guitar and taking care of the studio works of the Bengali rock band called Bhaaratvarsh. Apart from this, he has a solo line up as well. He is a multi-instrumentalist, arranger, music producer, and composer who arranges music for Bengali movies, jingles for various advertisements and private albums. His biggest project as a music producer till date is the arrangement for an anthem for a Bengali movie named 'Achena Bondhutto', which was sung by 11 of the most eminent singers in the industry including Anupam Roy, Siddhartha Ray, Anindya Bose, Surojit Chatterjee, and Upal Chatterjee. He has also acted as the frontman in a music video for a popular Bengali movie, Jatiswar. Apart from being a performer, he is an avid guitar teacher striving to pass on his knowledge to the younger generation in the most precise manner possible. He has a teaching experience of more than three years.