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(Photo courtesy Kevin Mazur/Getty) Pop star Katy Perry will visit Vivint Smart Home Arena in Salt Lake City on Friday, Nov. 2... (Photo courtesy Rony Alwin) Katy Perry’s performances for “Witness the Tour” entail about 100 members of cast and crew, and 2... (Photo courtesy Rony Alwin) The stage and video screen for Katy Perry’s “Witness the Tour” are so wide that they cut into are... (Photo courtesy Kevin Mazur/Getty) Ashley Evans, one of Katy Perry’s directors for “Witness the Tour,” said it’s easy to come... (Photo courtesy Kevin Mazur/Getty) Antony Ginandjar said of Katy Perry’s latest set design: “Obviously, the album has a bit o... (Photo courtesy Kevin Mazur/Getty) Antony Ginandjar of The Squared Division said his team worked on choreography with Katy Pe... (Photo courtesy Kevin Mazur/Getty) “The wardrobe part of the show is giant, as well. She’s not only changing between each act... (Photo courtesy Kevin Mazur/Getty) Pop star Katy Perry will visit Vivint Smart Home Arena in Salt Lake City on Friday, Nov. 2... (Photo courtesy Kevin Mazur/Getty) Katy Perry’s stage show for “Witness the Tour” includes enough props for 300 or 400 techni... (Photo courtesy Kevin Mazur/Getty) Antony Ginandjar said that after meeting with Katy Perry to establish a setlist and get he... (Photo courtesy Kevin Mazur/Getty) Ashley Evans said of The Squared Division’s approach to building Katy Perry’s “Witness the... (Photo courtesy Rony Alwin) During her stage show, Katy Perry is doing small costume changes onstage by putting on or removin... (Photo courtesy Kevin Mazur/Getty) Antony Ginandjar of The Squared Division said of Katy Perry and her stage show: “She’s a v... (Photo courtesy Rony Alwin) Pop star Katy Perry will visit Vivint Smart Home Arena in Salt Lake City on Friday, Nov. 24, 2017... (Photo courtesy of Stephen Busken) Ashley Evans, left, and Antony Ginandjar are Australian directors and choreographers who ... (Photo courtesy Stephen Busken) Ashley Evans, left, and Antony Ginandjar are Australian directors and choreographers who run...