Ananova:

Sir Paul McCartney has signed up to play on the new Band Aid single.

Macca will play bass guitar for the re-recording of charity track Do They Know It's Christmas?

He won't sing, though - he wants to leave the vocals to the new, younger generation of pop stars reports The Sun.

A star-studded line-up including Coldplay, Travis and The Darkness, have all agreed to take part.