Son of classical dancer and music director Shambhu Sen, Lalit Sen belongs to a family where art and talent are appreciated and encouraged. His uncle is popular music director
, and he is Sameer Sen's brother. Lalit is a composer, music director, and soundtrack artist. He has worked on several television soundtracks, playback music as well as Bollywood movies. The television series that he worked on include Bade Ache Lagte Hain,
, Kyunki Saans Bhi Kabhi Bahu Thi, Choona Hai Aasmaan, etc. amongst many others.
He has been a playback singer for Salaakhen, Ziddi, Jaane Jigar and Aflatoon. Besides this, he has been a music assistant for Aaina, Achanak, and Bechain.