Olivia Newton-John and Cliff Richard - Suddenly

"Suddenly" is a duet performed by Olivia Newton-John and Cliff Richard from the soundtrack Xanadu, and is the love theme from the 1980 film of the same name. It was written and produced by John Farrar.

"Suddenly" reached number 15 on the UK Singles Chart in October 1980 and number 20 on the US Billboard Hot 100 in January 1981.[3] It was also a major Adult Contemporary hit, reaching number four. The music video shows them in a penthouse singing the song to each other taken from her ABC TV special "Hollywood Nights" that aired before the 53rd Academy Awards on March 31, 1981.

Xanadu is the soundtrack of the 1980 musical film of the same name, featuring the Australian singer Olivia Newton-John and the British group Electric Light Orchestra (ELO). It was released in June 1980 on MCA Records in the United States and July 1980 by Jet Records in the United Kingdom. The original LP release featured on side one the songs of Newton-John, and on side two the songs of ELO. In 2008 the soundtrack album was digitally remastered as a bonus CD as part of the film's DVD release entitled Xanadu – Magical Musical Edition.

Although the film was a critical and commercial disappointment, the soundtrack was a worldwide success and received positive reviews from music critics going double platinum in the US and Canada. The hit singles "Magic" and "Xanadu", peaked at number one in the United States and United Kingdom, respectively. Both singles also went to number one in the Netherlands and Italy, respectively. It was the 5th most popular US soundtrack in 1981.