song | 1970 | Eurovision Song Contest | Song Dynasty | 1970 in music | My Way (song) | Eurovision Song Contest 2008 | Eurovision Song Contest 2013 | Academy Award for Best Original Song | Eurovision Song Contest 2009 | Eurovision | 1970 FIFA World Cup | Eurovision Song Contest 2006 | Song | Eurovision Song Contest 2011 | A Nightingale Sang in Berkeley Square (song) | A Song of Ice and Fire | Viña del Mar International Song Festival | Eurovision Song Contest 2004 | 1970 in baseball | The Song of Hiawatha | Song of the Year | Grammy Award for Song of the Year | Dream a Little Dream of Me (song) | Eurovision Song Contest 2007 | Song of the South | Cyprus in the Eurovision Song Contest | United Kingdom general election, 1970 | Song of Songs | Luxembourg in the Eurovision Song Contest |
"Knock, Knock Who's There?", written and composed by John Carter and Geoff Stephens, produced by Mickie Most, was the United Kingdom's entry at the Eurovision Song Contest 1970, performed by the Welsh singer Mary Hopkin.