In 2002, Ben Gibbard and Jimmy Tamborello entered into a long-distance musical relationship. The Death Cab For Cutie singer and the electronic music producer collaborated on an album from their respective cities, Seattle and L.A., forming the Postal Service. The electro-pop single "Such Great Heights" may sound like it could be a pensive love song, but for Gibbard, it was a departure from some of the more forlorn tunes he's written. "I think 'Such Great Heights' is the first time I've ever written a positive love song," he said, "where it's a song about being in love and how it's rad, rather than having your heart broken."
Jason Mraz re-emerged after his disappointing second album with this lead single, a Jack Johnson-esque ditty about giving yourself fully to someone else. The success of the reggae-tinged song (it earned two Grammy nods and a spot on the Billboard singles chart for well over a year) was something the folk-pop singer never predicted when he wrote it in 15 minutes at home. "I played a happy-hippie chord progression that would probably work without 50 different Bob Marley songs," he told Rolling Stone. "I thought, 'It's too novelty. This is a nursery rhyme,'" concluding that "you can never guess what's gonna be a hit."