A new song titled 'Channa Mereya' from the Ranbir Kapoor, Aishwarya Rai Bachchan and Anushka Sharma-starrer film 'Ae Dil Hai Mushkil' has been released. The song has been composed by Pritam and sung by Arijit Singh. Amitabh Bhattacharya has penned the lyrics of the song. Directed by Karan Johar, the film is scheduled to release on October 28.