“The Phantom of the Opera,” the longest-running Broadway musical, gives its final performance this Sunday, And its creator is asking fans to think fondly of the show with the release of a new song.

John Riddle as Raoul, left, and Emilie Kouatchou as Christine, look on as Ben Crawford, as the Phantom, makes a speech after the curtain call at the 35th anniversary performance of "The Phantom of the ...