He could play various types of musical instruments with equal expertise, such as Sitar, Sarod, Harmonium, Piano, Mandolin, Piccolo, Guitar, Violin, Esraj etc., along with percussion such as Tabla and Drums.

It was 1949–50 when Sudhin and his family had to shift permanently to Calcutta (Kolkata), initially at Srinath Mukherjee Lane and then to the house at Sinthi.

And a day came when Sudhin met Khitish Basu of the Gramophone Company of India who gave him the opportunity to compose Bengali modern music.

During this period, Bengali music was enriched by contributions of numerous music directors and lyricists such as Gouri Prasanna Majumdar, Pulak Bandyopadhyay, Shaymal Gupta, Mintu Ghosh, Pronob Roy, Robin Chattopadhya, Pabitra Chattopadhya, Anol Chattopadhya, Anupam Ghatak, Anil Bagchi, Jnan Prakash Ghosh, Salil Chowdhury, Nachiketa Ghosh, Hemanta Kumar Mukhopadhyay, Shyamal Mitra, Bhupen Hazarika and Sudhin Dasgupta.

He was also known to be an excellent player of different Indian and Western musical instruments like Tabla, Sitar, Piano, Harmonium, Esraj, Violin and others.

For some time Subir Sen and Sudhin Dasgupta stayed together in Tardeo Sonawala building in Mumbai when Sudhin composed a song "এত সুর আর এত গান" (Eto sur aar eto gaan), which was recorded by Subir Sen much later.

[4] Since his early years Sudhin Dasgupta was associated with the activities of IPTA (Indian People's Theatre Association), where his was befriended with many stalwarts of that time, such as Salil Chowdhury, Sourindra Mohan Sengupta, Ritwik Ghatak, Utpal Dutt, Khwaja Ahmad Abbas, Salil Chowdhury, Pandit Ravi Shankar, Jyotirindra Moitra, Debabrata Biswas and others.

During this time Sudhin Dasgupta composed music for Thikana, a famous poem written by Sukanta Bhattacharya, which was sung at IPTA meetings by Sourindra Mohan during the Teachers' Movement in 1954.

In basic Bengali song, Sudhin Dasgupta gifted the audience a number of super-hit tracks, including "Ei Jhir Jhir Batase", "Bhanga Torir Sudhu E Gaan", "Ami Taar Thikana Rakhini", "Ekta Gaan Likho Amar Jonno", "Oi Ujjwalo Din", "Saat Ronga Ek Pakhi", "Akash Eto Meghla", "Naam Rekhechi Bonolata" and many others.

Sudhin never looked back and Bengali film industry got a series of mega hits from him like "Antaral", "Shankhabela", "Tin Bhuboner Pare", "Prothom Kodom Phul", "Chaddabeshi", "Picnic", "Har Mana Har", "Basanta Bilap", "Hangsaraj", "Amrito Kumbher Sondhane" and many more.

In the same year Sudhin composed Mor gaan shishirer khora sure go, sang by Sandhya Mukherjee, which could be inspired by Tchaikovsky's composition Danse Choinoise (1882), having a faint resemblance in the first line only.

He also composed music for many of the well-known Bengali poems from authors like Sunirmal Basu, Jogindranath Sarkar, Jatindranath Sengupta ('থই থই শাওন এল ওই' by Sandhya Mukherjee), Batakrishna Dey ('কৃষ্ণচূড়া আগুন তুমি’ by Geeta Dutt) and Jatindra Mohan Bagchi ('বাঁশবাগানের মাথার ওপর' by Pratima Bandopadhyay) etc.

List of all Films for which Music or Lyrics were composed by Sudhin Dasgupta List of all songs for which Music or Lyrics were composed by Sudhin Dasgupta Bengal Film Journalists' Association Awards for best Best Music Director for the film Picnic (1972) Rabindra Bharati University paid homage to this him by creating an archive, where life and works of three legendary personalities of Bengal would be portrayed which includes Soumitra Chatterjee, Salil Chowdhury and him.