Trained under the guidance of the illustrious Composer and singer Hemant Kumar, Santanu Bhattacharya is today one of the most popular singers of Banglar Gaan. In Rabindra Sangeet, Santanu took training from Ms Maya Sen. He began play back singing in Bengali film 'Surer Sathi' in which Hemant Kumar himself composed the music. Some of the may films for which Santanu gave voice are 'Uttaradhikar', ladies Hostel', 'Cinemawala', ' Bishabrikha' etc.

He has also been giving voice for a number of TV serials. In the ATN-WORLD serial 'Charitrayan', he has composed and directed the music. He has also cut a number of CDs and audio cassettes of which 'Sabuj Patar Gaan' and 'Ekta Jhar Uthuk' became extremely popular.

Santnu has toured and performed in many prestigious venues in Delhi and other centres.