Mullan worked with musical directors including S. D. Burman, Madan Mohan, Naushad, and R. D.
[4] In Kolkata, Mullan was acquainted with musical director and singer Pankaj Mullick, who offered him a role as a percussionist in Bengali film productions[citation needed].
Mullan worked with various other musicians including Sailesh Dasgupta, Shyamal Mitra, and Nachiketa Ghosh.
[2] Mullan assisted R. D. Burman in introducing percussion to the Bollywood film industry[citation needed].
Burman's direction and guidance saw percussion become a significant musical element in the Bollywood film industry today.