5. Elton John and Kiki Dee, "Don't Go Breaking My Heart"
Elton John and Bernie Taupin were working on their 1976 LP Blue Moves when they decided to write a duet like the great Marvin Gaye and Tami Terrell songs of Sixties. They recruited English pop singer Kiki Dee to sing the song with Elton and it shot to the top of the Billboard Hot 100. Elton has since gone on to sing the song with everyone from Miss Piggy to RuPaul.