Bob Dylan wrote most of Desire with a playwright, but collaborations between musicians and literary figures are usually pretty painful. This one isn't without promise: Nick Hornby's novel High Fidelity is a music-geek classic, and Ben Folds is great at turning wordy lyrics into crafty pop. But formal knowledge works against them as they go from unfunny Randy Newman ("Levi Johnston's Blues") to too-cute Barry Manilow ("Belinda") to overdone Elvis Costello ("Password," about breaking into a girlfriend's e-mail). Folds doesn't do a bad job shaping Hornby's clunky song prose, but even Dylan couldn't do much with "Hope is a liar, a cheat and a tease/Hope comes near you/Kick its backside."

“The A Team”

This debut track from the then-20-year-old British singer-songwriter has a dark story behind it. Sheeran says he culls songwriting inspiration from "viewing other people's situations," which, for the heroine in "The A Team," involves drug addiction and prostitution that began as a teen. Sheeran paints the woman's trials with haunting imagery such as "But lately her face seems/Slowly sinking, wasting/Crumbling like pastries." "I did a gig at a homeless shelter, [and the song] is about one of the women there. It's her story," he said.