Kolkata: Singer Subir Sen, known for his work in "Chhoti Bahen", passed away here on Tuesday at a private hospital, sources said.

Some of his well-known songs include "Dheere chalao zara" with Lata Mangeshkar in "Aas Ka Panchhi" and "Humein un rahon par chalna hai" in "Masoom". In the 1950s, Sen added a unique romantic touch to hit Bengali songs such as "Monalisa tumi ki bolona".