In a class by himself, Debabrata Biswas’s singing was marked for its exceptional depth of emotional expression verging on the dramatic. His early gramophone recordings of Tagore songs brought out in the early 1940s demonstrate soulful full-throated expression of melody with a strict adherence to the rules and norms of tradition. Of some of the rules written and unwritten, he felt obliged to break in the early 1960s – considered by most to be his heydays. His renderings in this period show amazing power of voice and modulation, compounded with an overt emotional expression of a kind hitherto unpractised by his contemporaries and even himself. It showed a greater variety of emotional expression from the thunderous and rumbling to the soft and mellow. Somewhat audacious and overpowering in his personal feelings and mores, his enunciation of the words of over-used and hackneyed Tagore lyrics extracted new meanings and freshness from the compositions. Some of his numbers which go deep into the heart of the listeners s are Akash bhora surjo tara, Je ratey mor duarguli, Pinakete lagey tonkar, Tomar kache ebor magi, Chokher jole laglo joar, Swapne amar mone holo .

Filmmaker Ritwik Ghatak took help of Biswas for song selection & play back of Tagore songs. Those Tagore songs used in the movies became extremely popular among the masses. Debabrata Biswas was actively engaged with IPTA group for a long period. He sang a few songs set to music by Salil Choudhury, Hemanga Biswas, Jyotirindra Moitra and recorded songs during the liberation movement of Bangladesh. Songs by Najrul. He did not endear himself to the purists of Tagore songs challenging the published tune-notations which people were accustomed to associating with Tagore lyrics. Although initially he did brace himself to meet the challenge, he stopped all record production. As further controversy fuelled, his public live performances continued with an ever increasing demand. But with age and a declining voice and his lifelong asthma affliction, he withdrew from public appearance, venting his anguish and frustrations in his autobiographical reflections : Bratyo Janer Rudhha Sangit (or The Stifled Music of an Untouchable). His birth anniversary is being observed today.