Though his early childhood was spent in what is now Bangladesh, his entire musical career spanning more than 2½ decades mostly based out of Kolkata, West Bengal, India.

[2] In his early days, Sagar Sen showed remarkable range and depth, a prodigious ability to convey complex emotions as a singer, impressing audiences through his local performances and building up a strong following.

[2] 1968, the defining year of Sagar Sen’s musical journey, saw the release of his cult single Ami Jene Shune Bish Korechhi Paan, a song from Tagore’s first operatic ballad Mayar Khela, under the EMI record label.

Through the decades, the legend’s innumerable Rabindrasangeet renditions that were regularly broadcast live by the AIR and Akashvani, now find place in their archival collections.

Sagar Sen has left behind a rich, musical legacy of contemporary Rabindrasangeet renditions through his hundred plus soundtracks recorded with the Megaphone, Columbia, EMI-HMV in several chartbusting albums traversing two and half decades.

Sagar Sen had pioneered the model of conceptualizing thematic stage shows & concerts, based solely on Tagorean music.

Through these thematic stage-show concerts organised at prestigious venues in Kolkata like Rabindra Sadan, Sisir Mancha and Kala Mandir, Sagar Sen provided a huge platform and reach for contemporary Tagorean artistes and danseuse to promote and showcase their talents.

His renditions Ei Jibon Emni Kore Ar To Soy Na and Ki Holo Chand Keno Meghe Dheke Gelo, modern Bengali song tracks composed by Salil Chowdhury and recorded in 1980, were runaway hits.

His uniqueness lay in the fact that he gave extreme importance to the minutest details of the notations and yet his renditions exhibited the best of freestyle singing.

His unique attributes like his melodious baritone voice, attention to the minute details and the most appropriate emotional delivery and style required for the rendition of songs composed by Rabindranath Tagore appealed to the masses on a large scale and yet kindled the connoisseur listener as well.

Sagar Sen performed as a playback artiste notably in the Bengali movies Je Jekhane Dnariye (1974), and Parichay (1979) and Mantramugdha, amongst others.