Ranbir Kapoor, Imtiaz Ali promote `Rockstar`

Updated: Sep 12, 2011, 11:09 AM IST

Mumbai: Bollywood actor Ranbir Kapoor and film director Imtiaz Ali promoted their upcoming film `Rockstar` in Mumbai on Sunday.

Kapoor, who plays the lead role, described the film as a musical journey and a love story of a local Delhi boy who transforms into a famous rockstar.

The director of the film, Imtiaz Ali, informed that the music of the film, will be launched on September 20.