Photo credit: Lia Toby
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Next Olivia Grant Slideshow: Louis XIII: 100 Years - VIP film screening & party at The Box - London United Kingdom - Tuesday 2nd February 2016
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.