Bollywood Hindi Movie Rock On MP3 Songs Download PagalWorld. Music composed by Shankar-Ehsaan-Loy. Star cast is Arjun Rampal, Farhan Akhtar, Koel Purie, Nicolette Bird, Prachi Desai, Shahana Goswami, Sai Gundewar, Luke Kenny, Purab Kohli .Tracks were unveiled to the public in 2008.