John Legend & ?uestlove: The Billboard Cover Story
John Legend & ?uestlove: The Billboard Cover Story

"America seems to always be at war," John Legend muses as he casually plinks the keys of his piano at Brooklyn's Music Hall of Williamsburg. "While politicians go home safe to their families, we've got a government willing to sacrifice people's lives every day."

Backed by four members of the hardest-working band in hip-hop, the Roots, Legend then launches into a kinetic, 12-minute cover of Bill Withers' "I Can't Write Left Handed," about a young soldier shot during the Vietnam War. The song was originally recorded in 1973, but its message still resonates in 2010, which is precisely the point. "I Can't Write" is one of 11 socially conscious '60s and '70s soul songs covered on Legend and the Roots' collaborative album, "Wake Up!," due Sept. 21 on Columbia. (Common and Melanie Fiona make guest appearances on the set's lead single, "Wake Up Everybody.")

Listen To A Full Stream of "Wake Up!":

The Sept. 7 concert in Brooklyn marked the second time in eight days that Legend and the Roots played gratis in New York thanks to American Airlines, which sponsored the gigs as part of an initiative to promote, a new social networking site geared toward African Americans. "Nothin' like a free show," Legend cracked. "Don't get used to it."

Video Below: Exclusive video Q&A with John Legend and ?uestlove