Adam Levine and Usher left their red chairs May 6, 2013 and jumped on stage last night During  Monday’s Live Playoffs Round I of “The Voice” to perform a duet of Stevie Wonder’s “Superstition.”

Check out Usher and Levine’s funky and smooth duet of ‘Superstition’ in the video clip below:

http://youtu.be/EX8NPBQ4LfM