"Unconditionally" is a four-minute torch song in which Perry declares her love amid sparse, echoey keyboard effects and big drums in the verses, with a lush orchestra of synth for the chorus. It's one of four songs that share production credits from Dr. Luke (who has worked with Kelly Clarkson and Rihanna and Cirkut Britney Spears, Taylor Swift on Prism, including "Roar," which they worked on with Max Martin. Perry will perform the song at this year's MTV Europe Music Awards on November 10th, according to USA Today. The other track, "Birthday," comes nine days ahead of Perry's own 29th birthday.

Albums