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Guru is a 2007 Indian biographical drama film loosely based on the life of Dhirubhai Ambani, a business magnate who founded Reliance Industries. The film was co-written and directed by Mani Ratnam. It stars Abhishek Bachchan, Aishwarya Rai, R. Madhavan, Vidya Balan, Arya Babbar, and Mithun Chakraborty in the leading roles. The film also has Mallika Sherawat in a guest appearance. The score and soundtrack for the film was composed by A. R. Rahman. The film was dubbed and released simultaneously in Tamil as Guru and in Telugu as Gurukanth. In the Tamil version of the film, the lead role (Abhishek Bachchan) was dubbed by Suriya. The film was released on 12 January 2007 with its première at the Elgin Theatre in Toronto, Canada, on Thursday 11 January 2007, making it the first Indian film to have a mainstream international première in Canada. The film was premiered in the Tous Les Cinemas du Monde (World Cinema) section of 2007 Cannes Film Festival.