Anil Krishna Biswas, professionally known as Anil Biswas, was an Indian film music director and playback singer from 1935 to 1965, who apart from being one of pioneers of playback singing, is also credited for the first Indian orchestra of twelve pieces and introducing orchestral music and full-blooded choral effects, into Indian cinema. A master in western symphonic music was known for the Indian classical or folk elements, especially Baul and Bhatiyali in his music. Out of his over 90 films, most memorable were, Roti (1942), Kismet (1943), Anokha Pyar (1948), Tarana (1951), Waaris (1954), Pardesi (1957) and Char Dil Char Rahen (1959).

Char Dil Char Rahen is a 1959 Hindi film directed by Khwaja Ahmad Abbas, and starring two big stars of the era, real-life brothers Shammi Kapoor and Raj Kapoor. The movie is based on a novel of the same name.