Band Aid 20 was the 2004 incarnation of the charity supergroup Band Aid. The group, which included Daniel Bedingfield, Dido, Justin Hawkins of The Darkness, Thom Yorke and Jonny Greenwood of Radiohead, Chris Martin of Coldplay, Bono of U2, and Paul McCartney, re-recorded the 1984 song "Do They Know It's Christmas?", written by Band Aid organisers Bob Geldof and Midge Ure.