"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," Perry told MTV while teasing the second single announcement. "It's my favorite song off the record."

Revealing her next single is just one of the new revelations of what to expect when Prism is released on October 22. According to Billboard, the album is packed with autobiographical references to her life between this record and 2010 studio effort, Teenage Dream.

Songs like "Ghost" speak frankly on her divorce from comedian Russell Brand (including such lines as "You sent a text/It's like the wind changed your mind"), while other tracks such as "Spiritual" and "Legendary Lovers" are about finding peace through therapy and Transcendental Meditation. "By the Grace of God," on the other hand, is a little less� well, peaceful.