Ascendant retro-soul singer Leon Bridges joined Macklemore & Ryan Lewis onstage at the American Music Awards tonight for the debut of a new song called "Kevin." In addition to Bridges, Macklemore was backed up by a string section and a gospel choir as he rapped about the dangers of prescription pill abuse and over-medication. Watch below.
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Macklemore & Ryan Lewis are currently working on the follow-up to 2012's Grammy-winning The Heist.
UPDATE: Here is the studio version of "Kevin" via NPR.
