Keira Knightley is a British actress particularly famous for her roles in Pride & Prejudice, Pirates of the Caribbean and Love Actually. To date, her only major singing role has been in the 2013 film Begin Again and she has no intention of taking another musical role as she expressed to Playbill:

No. I don’t think I’ve got a voice that would do a musical… I don’t think so. I mean, I think that’s so fun, and I love singing along to them, and I love seeing them, but no. I don’t think that I could pull that one off.

She also told Classic FM that she’s “never going to sing again” after the stress she went through to improve her vocals for the role.