Harvey: Singing 'can take a lot out of me'

PJ Harvey says performing her songs is "draining" because she puts so much emotion into them.

The 'Words That Maketh Murder' hitmaker – who is joint favourite to win the Barclaycard Mercury Prize this year for her latest album 'Let England Shake', which was inspired by the First World War - feels exhausted singing her tracks live because she has to think carefully about the lyrics.