Peter Allen was an Australian singer-songwriter, musician, and entertainer, known for his flamboyant stage persona, energetic performances, and lavish costumes. Allen's songs were made popular by many recording artists, including Elkie Brooks, Melissa Manchester and Olivia Newton-John, including Newton-John's first chart-topping hit "I Honestly Love You", and the chart-topping and Academy Award-winning "Arthur's Theme" by Christopher Cross. In addition to recording many albums, Allen enjoyed a cabaret and concert career, including appearances at the Radio City Music Hall riding a camel. His patriotic song "I Still Call Australia Home", has been used extensively in advertising campaigns, and was added to the National Film and Sound Archive's Sounds of Australia registry in 2013.
Allen was the first husband of Liza Minnelli. They met in October 1964, were engaged on 26 November 1964, married on 3 March 1967, formally separated on 8 April 1970, and divorced on 24 July 1974. Allen had a long-term partner, model Gregory Connell. They met in 1973 and were together until Connell's death in 1984.