"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.

[3] It finished the year as number 91 on the Billboard Year-End Hot 100 Singles of 1981.

[4] The music video shows Newton-John and Richard in a penthouse singing the song to each other, taken from her ABC TV special "Hollywood Nights" that aired before the 52nd Academy Awards on April 14, 1980.

The single's B-side, "You Made Me Love You" (Olivia solo), was also featured in the film Xanadu but does not appear on the soundtrack album.

7-inch vinyl single[5] The song was covered by Filipino singers Sam Milby and Toni Gonzaga on their debut studio album Love Duets (2009).