Roar (song) is on the 2013 Katy Perry album Prism.
 Throughout her career, Perry has also co-written songs recorded by other artists, including Lesley Roy, Kelly Clarkson, Jessie James Decker, Selena Gomez & the Scene, Britney Spears, Iggy Azalea, Rita Ora, Nicki Minaj, and Ariana Grande
 "Unconditionally" followed as the second single from Prism on October 16, 2013, and peaked at number 14 in the United States

