Before he became an Allman Brother and started Gov't Mule, this power-blues singer-guitarist was a Nashville cat, playing and writing country-soul music. Man in Motion is a swing back to that hardy romanticism, with more Memphis in the mix and a plaintive poise in Haynes' vocals and solos. "Man in Motion" and "River's Gonna Rise" roll at a gospel-funk clip that would fit the Hi-era Al Green. The sax-and-clavinet strut of "Sick of My Shadow" evokes Traffic's Dixie-prog period. And Haynes has a worthy successor to his longtime Mule-encore hymn "Soulshine" in "Save Me," a ballad of need and plea that feels like benediction.

Listen to Warren Haynes' "Man in Motion":

Related: The 100 Greatest Guitarists of All Time: Warren Haynes

“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.