Katy Perry brought her Lifetimes Tour to PHX Arena on July 12. It was a sci-fi fever dream with "Roar," "Firework," "I Kissed a Girl" and more hits.

Katy Perry brought her Lifetimes Tour to PHX Arena on July 12. It was a sci-fi fever dream with "Roar," "Firework," "I Kissed a Girl" and more hits.

Katy Perry is getting futuristic on her new Lifetimes tour, which kicked off its North American run May 7 in Houston. Here are all the songs played. Watch Party Newsletter What to watch Win $100 ...