On the occasion of the release of his new memoir, Unmasked, Andrew Lloyd Webber visited Live With Kelly & Ryan.

The world-renowned composer will turn 70 later this month, and earlier this year his The Phantom of the Opera celebrated its 30th year on Broadway. Lloyd Webber sat down at the piano to play through some of his most beloved tunes, including Phantom’s “Music of the Night,” which he says was not originally written for the show.

“We tried out The Phantom at a little festival I do every year and we realized when we got to the Phantom’s lair that we needed a song, and we didn’t have it in the first draft,” says Lloyd Webber. “I remembered a song I had for Sarah Brightman, actually to sing, which became ‘Music of the Night.‘”

Read: 5 THINGS YOU MIGHT NOT HAVE KNOWN ABOUT ANDREW LLOYD WEBBER

Lloyd Webber also discussed the "strange household" he lived in throughout childhood. “We lived in this fairly rundown flat in a part of London called Kensington. ... My brother played the cello, there was me with my pop and rock and gramophone for my musicals, my dad had a huge electronic organ because he was a very good organist, and then eventually a pianist moved in, named John Lill... My goodness, it was bedlam.” Hear the full story in the video below.