Lesley Duncan (12 August 1943 – 12 March 2010) was an English singer-songwriter. Pursuing weighty lyrical themes such as religion, motherhood, and politics, Duncan was a mainstay of British radio during the '70s. One of her songs, "Love Song", has been covered by many artists, among them Elton John, whose cover version featured vocal contributions from Duncan. She was also a prolific session singer, famously providing backing vocals for Pink Floyd's seminal The Dark Side Of The Moon. Unfortunately, Duncan suffered from severe stage fright, limiting her commercial viability as a performer.