Keira Knightley and Adam Levine
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Keira Knightley 'begins again' with a singing role

1 May 2014 Last updated at 00:58 BST

Keira Knightley has been on the red carpet to promote her forthcoming film Begin Again.

The movie is a romantic drama and the actress has to sing - despite being known for her period roles rather than a musical background.

Talking Movies' Tom Brook reports.

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