<Li> Trevor Horn (12" and 1985 reissue) </Li> <Tr> <Th_colspan="2"> Music video </Th> </Tr> <Tr> <Td_colspan="2"> "Do They Know It's Christmas" on YouTube </Td> </Tr> <P> "Do They Know It's Christmas?" is a song written in 1984 by Bob Geldof and Midge Ure in reaction to television reports of the 1983--85 famine in Ethiopia . It was first recorded in a single day on 25 November 1984 by Band Aid, a supergroup put together by Geldof and Ure and consisting mainly of the biggest British and Irish musical acts at the time . The single was released in the United Kingdom on 3 December 1984 and aided by considerable publicity it entered the UK Singles Chart at number one and stayed there for five weeks, becoming the Christmas number one of 1984 . The record became the fastest selling single in UK chart history, selling a million copies in the first week alone and passing 3 million on the last day of 1984, on the way to displacing Wings's "Mull of Kintyre" as the biggest - selling single of all time in the UK . It held this title until 1997 when it was overtaken by Elton John's "Candle in the Wind 1997", released in tribute to Diana, Princess of Wales following her death . The original version of "Do They Know It's Christmas?" has sold 3.8 million copies in the UK to date . </P>

Who sang do they know its christmas time