Next Billy Crystal Slideshow: Celebrities at the Staples Center in Los Angeles - Los Angeles California United States - Saturday 2nd May 2015
The live album is set for released in November.
The movie begins filming in the UK.
The 'Sherlock' and 'Doctor Strange' star joined Gilmour onstage at the Royal Albert Hall for a rendition of the Pink Floyd classic.
Time to learn what Kathy Bates' character has to do with all of this.