Kishore Kumar sang a song in many films for Amitabh Bachchan. But there was a period of allegedly in the 1980s when there was an estrangement between the two. It is said that Kishore Da was making a film as a producer, in which he wanted to cast Big B. They approached them, but they were not ready to work in his film. Kishore Kumar found this very bad and decided that he would never sing songs for Amitabh. It is claimed that as soon as Kishore Da stopped singing for Big B, his career came to slope.
