In 1953, he joined
His Master's Voice as a pianist in their backing orchestra. He became chief music director in 1966 of the Cultural Academy located in Karachi, Pakistan. Also in 1966, he led the Pakistan Delegation to the
Commonwealth Music Festival in London. In 1967, he was appointed a music director at Dhaka Radio. He was the music director for over 50 Bengali and Urdu films in India, Pakistan and Bangladesh. He was the first music director of the first movie of Bangladesh "Mukh-o-Mukhosh" directed and produced by Abdul Jabbar Khan. His most famous score for an Indian film was for the Bengali film from
Kolkata,
Lottery. He burst onto the Pakistan movie scene with his score for the first Bengali film made in Pakistan,
Mukh O Mukhosh, and became famous overnight. Other famous scores under his direction were
Asiya and
Nabarun. He wrote the haunting melodies for one of the first films made in independent Bangladesh,
Dhirey Bahey Meghna and was responsible for bringing
Hemanta Mukherjee and
Sandhya Mukhopadhyay, two of India's most prominent Bengali singers of the time, to Bangladesh to record the playback songs. He was chosen to be the music director for the South Asian Federation Games, held in Dhaka, in both 1985 and 1995, where his orchestrations were seen and heard by an estimated audience of over 500 million across the
SAARC countries during the opening and closing ceremonies. Samar Das was the founding president of the Bangladesh Sangeet Parishad. In the year of 1987 Samar Das was appointed as chief music teacher to train up the students of
Bangladesh Army Military Band in Dhaka Cantonment. He was assisted and communicated by the than Captain Ataur Rahman on behalf of chief of Bangladesh Army Lt. Gen Atiqur Rahman G+ (retd) ==Role as a freedom fighter==