It was part of the trilogy composed of Meghe Dhaka Tara (1960), Komal Gandhar and Subarnarekha (1962), all dealing with the aftermath of the Partition of India in 1947 and the refugees coping with it, though this was the most optimistic film of his oeuvre.

[6] The film explores three themes juxtaposed in the narrative: the dilemma of Anusuya, the lead character, the divided leadership of IPTA, and the fallout from the partition of India.

[7] The film title was taken from the line of a poem[a] by Rabindranath Tagore that meant a sur or note, E-flat.

Unlike his other films, this one runs along an upbeat mood with the lead pair of lovers (Vrigu and Anusua) being reunited.

Music was by Jyotirindra Moitra, from IPTA, and a noted Rabindra Sangeet exponent who had previously given music in Ghatak's Meghe Dhaka Tara (1960), and had song by singers like, Bijon Bhattacharya, Debabrata Biswas, Hemanga Biswas.