, the movie has been served by the ingenious lyricist Irshad Kamil. Pee Loon, Tum Jo Aaye and Parda have been the heart-catching tracks directed by the music director Pritam. Once Upon a Time in Mumbaai has been plotted under the title of "a tale of two gangsters from the eras of past and present, whose lives enter parallel paths as they struggle to survive within Bombay's criminal underworld" by depicting the characters of Shoaib and Sultan. Produced by Ekta Kapoor and Sobha kapoor, this movie has another worth-mentioning character of ACP Angel Wilson (Randeep Hooda), who critically examines the changing face of underworld in Mumbai. Under the tagline the man Mumbai once feared, the man Mumbai now fear, this is worth-seeing movie carrying a lot of information and entertainment.