A new version of song 'Dhaakad', from actor Aamir Khan's upcoming sports drama film 'Dangal' has been released. While Aamir has rapped in the song, the music has been composed by Pritam with lyrics penned by Amitabh Bhattacharya. Aamir has previously sung songs for films, including 'Aati Kya Khandala' from the 1998 film 'Ghulam'.