k. l. saigal died on 18 jan 1947 and the film was released several months following his death. saigal had become addicted to alcohol and according to mds of the time he could record only after drinks. but for parwana he recorded the songs with no drinks. according to composer naushad, he had recorded the song "jab dil hi toot gaya" for "shah jehan" (1946) after asking saigal to sing without having alcohol, which saigal did after some reluctance and uncertainty on his part. the news spread and khurshid anwar then got saigal to do the same with the songs in parwana. the music became very popular. saigal's songs had personified the musical era of the 1930s and 1940s, which was also known as the saigal era.