"The Phantom of the Opera" is a song from the 1986 stage musical of the same name. It was composed by Andrew Lloyd Webber, with lyrics written by Charles Hart and Richard Stilgoe, and additional lyrics by Mike Batt. The song was originally recorded by Sarah Brightman and Steve Harley, which became a UK hit single in 1986, prior to the musical. In its theatrical debut, it was sung by Brightman and Michael Crawford in their roles as Christine Daaé and the Phantom.

The Phantom of the Opera is a musical with music by Andrew Lloyd Webber, lyrics by Charles Hart, additional lyrics by Richard Stilgoe and a libretto by Lloyd Webber and Stilgoe. Based on the 1910 French novel of the same name by Gaston Leroux, it tells the tragic story of a beautiful soprano, Christine Daaé, who becomes the obsession of a mysterious, masked musical genius living in the subterranean labyrinth beneath the Paris Opéra House.