Muktir Gaan (1995)

Muktir Gaan (Bengali : মুক্তির গান The Song of Freedom) is a 1995 Bangladeshi documentary film Directed by Tareque Masud and Catherine Masud. This is a documentary film which explores the impact of cultural identity on the Bangladesh Liberation War in 1971, where music and song provided a source of inspiration to the freedom fighters and a spiritual bond for the whole emerging nation.

More at Wikipedia.