5 Songs You Probably Didn't Realize Were Written by Taylor Swift

After visiting B.o.B's label, Grand Hustle Records, Swift approached the rapper about collaborating together. "She came to Atlanta and she hit up Grand Hustle," he told AceShowbiz. "I wasn't there. Tip [T.I.] was there and I eventually linked with her in Dallas and the rest is history." Aside from cowriting the track, Swift also sings and appears in the music video.