Katy Perry - Roar (The Prismatic World Tour on EPIX) Music Video by Katy Perry performing Roar live at the Prismatic World Tour on EPIX © 2015 Capitol .brOwn THE PRISMATIC WORLD TOUR LIVE on DVD & Blu-ray on October 30th, featuring the entire concert plus an additional thirty minutes of behind-the-scenes .brRoar (Live at Allphones Arena) Download the album: brKaty Perry performing Roar at The Prismatic World Tour. All the rights belong to Katy Perry.