Rockstar Songs Lyrics: The music for Rockstar is scored by A. R. Rahman and the lyrics of Rockstar songs are penned by “Irshad Kamil”. The audio rights have been bought by T-Series label. Mohit Chauhan is the voice of Ranbir Kapoor (The Rockstar). 

From the promos, we can see it’s Mohit Chauhan’s voice which suits to Ranbir’s personality. Ranbir acted brilliantly as the promos and songs are concerned. Mohit Chauhan has sung most of the songs. Imtiaz did well that he chose only one singer for Ranbir’s character, many times in Bollywood we see one actor acts/lip-sync on various singers voices.