Mallory Benedict/NPR

Mates of State's newest album is Mountaintops. Glynis Selina Arban hide caption

itoggle caption Glynis Selina Arban

Clockwise from top: Tinariwen, Lykke Li, Eleanor Friedberger, John Maus. Courtesy of the artists hide caption

itoggle caption Courtesy of the artists

Mates of State's cover of Tom Waits' "Long Way Home" takes an unexpected approach to the morose original. courtesy of the artist hide caption

itoggle caption courtesy of the artist

Mates of State's Kori Gardner and Jason Hammel turn Tom Waits' loping "Long Way Home" into a relentlessly sunny anthem. courtesy of the artist hide caption

itoggle caption courtesy of the artist