Diljit Dosanjh says he didn't do much prep for Amar Singh Chamkila: 'I had no idea about...'

Directed by Imtiaz Ali, Amar Singh Chamkila stars Diljit Dosanjh and Parineeti Chopra as the singer and his wife Amarjot Kaur, who were shot dead in 1988. The A R Rahman musical premieres on Netflix on April 12.