The film score and soundtrack are composed by A. R. Rahman while the lyrics for songs are written by Gulzar. Rahman re-used most of his compositions from the Tamil soundtrack of O Kadhal Kanmani, with the exception of three songs. He composed two new songs for the film which are the Hindi counterparts of "Aye Sinamika" and "Malargal Kaetten" that were part of Tamil version. The Hindi counterpart of "Parandhu Sella Vaa" is a cover version of Rahman's yesteryear classic "Humma Humma" from the 1995 movie Mani Ratnam's Bombay. Dubbed as "The Humma Song", the cover was done by Badshah and Tanishk Bagchi. The full soundtrack was released by Sony Music India on 4 January 2017.