Producer and cinematographer Nariman Irani was in a financial mess when his film
Zindagi Zindagi (1972), starring
Sunil Dutt flopped. He was in debt for Rs 1.2 million and couldn't pay the money off on a cinematographer's salary. When he was doing the cinematography for
Manoj Kumar's major hit
Roti Kapada Aur Makaan (1974), the film's cast (
Amitabh Bachchan,
Zeenat Aman,
Pran) and crew (assistant director Chandra Barot) decided to help him out. They all recommended that he produce another film and that they would anticipate in its production. They all approached scriptwriting duo
Salim–Javed (
Salim Khan and
Javed Akhtar), who gave them an untitled script that had already been rejected by the entire industry. The cinematographer Nariman Irani, while working on
Chhailla Babu, decided to borrow most of the plot of
Chhailla Babu and shared a modified story idea with Chandra Barot, who made the new modified story into the film
Don (1978). The script had a character named
Don. Bachchan would play Don, and Barot would direct the film. Aman and Pran would play key roles in the film. The film took three-and-a-half years to complete. Before filming was completed, producer Irani died from an accident on the set of another film he was working on. During the making of Manoj Kumar's
Kranti in November 1977 at Rajkamal Kalamandir Studios, Bombay, a sudden cloudburst caused a wall to collapse on Nariman Irani. He was seriously injured, hospitalized, and passed away a few days later. Barot faced budget restraints but received aid. The rest of the cinematography and production was completed by Barot with support from the cast and crew. Barot showed the film to his mentor
Manoj Kumar, who felt that the film was too tight and needed a song in the midst of the action-filled film, and so "Khaike Paan Banaraswala" was added into the film.
Don was released without any promotion on 12 May 1978 and was declared a flop the first week. Within a week after adding the song "Khaike Paan Banaraswala", the song by itself became a big hit, and word of mouth spread, so by the second week, the film's fortunes were reversed, and the film was declared a blockbuster. The profits from the film were given to Irani's widow to settle her husband's debts. The hit-song "Khaike Pan Banaraswala" sung by
Kishore Kumar was choreographed by
P. L. Raj.
Don was produced on a budget of 70
lakh Adjusted for inflation, its budget is equivalent to $ million (22
crore) in 2016. ==Soundtrack==