Rapper M.I.A has criticised large charity concerts such as Live Earth, claiming they are a waste of time.

The singer told Gigwise: "We wouldn't need that stuff if we built it into our daily living. Live Aid and all that stuff was good in the '80s. It's celebrities that I have a problem with. People should just help!"

The Arular star argues that the messages promoted by such gigs could be spread better by individual musicians.

"Like Bjork - I learnt that from her when I supported her recently. She just has a weird energy about her as a woman and she spread such positive vibes, there were birds singing and rainbows, we could even see a tornado happening!"