Imtiaz Ali's 'Rockstar' revolves around Janardhan Jakhar, played by Ranbir Kapoor, a young man from Delhi who dreams of becoming a rockstar like his idol, Jim Morrison

Filmmaker Imtiaz Ali explains why an Indian girl didn’t make it to become his lead in 'Rockstar' opposite Ranbir Kapoor and what made him choose Nargis Fakhri, an American instead