John Legend made the aptly-named Evolver to show that he's more than just an R&B crooner. To spread his wings, he called in the largest number of collaborators he's ever brought in on an album, including Kanye West, Pharrell Williams, Akon, Andre 3000 and Buju Banton. As for whether or not he'll be on the campaign trail with Barack Obama this fall (he premiered new single "If You're Out There" at the Democratic National Convention), Legend says, "I hope to do some work in my home state of Ohio, especially because black voters were shut out of the last election. But I'll mainly be campaigning for my new album."

"Green Light"

Listen to "Green Light" in full:

Exclusive video of John Legend on the making of Evolver, and performing music from it live.

Check out all of the albums in the 2008 Fall Music Preview