Katy Perry Performs 'Prism' Tracks For The First Time at World Tour Kick-Off: Watch

  On the first show last night, the much-anticipated setlist was revealed. Katy opened with 'Roar', and closed with 'Firework'. At the Odyssey Arena on Wednesday, the California girl performed several tracks from 'Prism' for the very first time including: 'Birthday', 'This Moment', 'Legendary Lovers', 'Double Rainbow', 'This Is How We Do' or 'It Takes Two'. The setlist of the 'Prismatic World Tour' also includes a tribute to Queen of Pop Madonna. Katy strutted the runaway to a mash-up of 'International Smile' and 'Vogue'.