Keira Knightley sings on screen in Begin Again
28 April 2014 Last updated at 19:07 BST
Keira Knightley's latest film Begin Again sees her sing on screen.
The movie also stars Maroon 5's Adam Levine, in his acting debut.
Speaking at the closing night of the Tribeca Film Festival, Knightley told the BBC's Tom Brook that she had not thought about singing, "until I got to a studio and thought, 'Oh I have no idea how to do this!'"