'You Know What I Mean', a new song from Farhan Akhtar's upcoming film 'Rock On 2' has been released. It features Farhan, Arjun, Purab Kohli and Luke Kenny, members of band 'Magik' from the 2008 film 'Rock On'. The song has been composed by music composers Shankar, Ehsaan and Loy with vocals by Farhan Akhtar and lyrics by Javed Akhtar.