Unconditionally

This big power ballad was released as the second single from Prism, and was the follow-up to "Roar." "It's a love song and it's different from 'Roar' - it's not eighth-notey," said Perry. "I think it's a universal love song that everyone's going to be able to relate to no matter the age, no matter male or female. It's my favorite song off the record."

Perry penned this ode to falling in love with Swedish hitmaker Max Martin, American producer Dr. Luke and Canadian songwriter Cirkut. The same trio also contributed to "Roar." During a discussion at the 2013 ASCAP "I Create Music" Expo in Los Angeles, Perry said as a team they have certain strengths. "With Max, it's melody choices," she said "Luke is production and I'm topline and melody."

The song finds Perry singing about looking past her beau's flaws and loving him for who he is. "There is no fear now... I will love you unconditionally," she belts over woodblock percussion and a dramatic bass line. It is one of two tracks on Prism that were inspired by Perry's boyfriend John Mayer— the other one being the Deluxe edition bonus track "It Takes Two."