[1][2] He later married Feroza Begum, a noted Nazrul Sangeet singer, converting to Islam and taking the name Kamal Uddin Ahmed.

He earned his doctorate in music from Banaras Hindu University in 1943 for his work on Meerabai, the composer and singer of Bhajans.

His work was based on classical music and tended towards the Thungri style, though he also drew inspiration from other sources.

[citation needed] Dasgupta composed the music for about eighty Bangla films, among them Tufan Mail, Jhamelar Prem, Ei Ki Go Shes Dan.

During his term there, he developed a close association with Kazi Nazrul Islam and composed the music for almost four hundred of his songs.