JEFF the Brotherhood "Sixpack" (live on 'Letterman')

JEFF the Brotherhood 'Sixpack' (live on 'Letterman')
Having just dropped their Exclaim!-approved new album Hypnotic Nights, endlessly endearing rock duo JEFF the Brotherhood hit Late Show with David Letterman to perform their summer anthem "Sixpack."

Compared to their legendary live show, the band were relatively subdued, though they did offer up a solid take on the Weezer-esque track. Rounded out by back-up vocalists, a synth player and a second guitar, it all sounded pretty close to the studio version.

Check out the full performance below.