Photo credit: Daniel Deme
Next Tania Bryer Slideshow: 'Justin and the Knights of Valour' Screening - London United Kingdom - Sunday 8th September 2013
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.