A new live version of Pink Floyd's "Comfortably Numb" that appears in Roger Waters The Wall has surfaced online.

The track, which runs about a minute longer than the original studio recording, will be available on the movie's soundtrack album, due out November 20.

In a new interview with Esquire, which premiered the song, Waters scoffed at the idea that he typically writes dark material.

"People say, 'Why do you write gloomy stuff?' And I always go, 'Next!'" he said. "Or I go, 'You don't get to choose what you paint.

If you have a vision, you f**king paint it, and you just be very, very glad that you had a f**king thought that was cogent in some way.'"

Roger Waters The Wall soundtrack, produced by Radiohead collaborator Nigel Godrich, features concert recordings from around the world on his massive staging of the double-album between 2010 and 2013.