​Yvonne Marianne Elliman (born December 29, 1951) is an American singer who performed for four years in the first cast of Jesus Christ Superstar. She scored a number of hits in the 1970s and achieved a #1 hit with "If I Can't Have You." After declining success, she dedicated herself to her family, and after a long hiatus made a comeback album as a singer-songwriter in 2004. Description above from the Wikipedia article  Yvonne Elliman, licensed under CC-BY-SA, full list of contributors on Wikipedia.