Late night television gave Southern metal act Mastodon a warm welcome last night (Oct. 5) as they performed their current single 'Curl of the Burl' off of their new album 'The Hunter' on the 'Late Show With David Letterman.'

The performance rocked the studio, as the band played impeccably, with singer-guitarist Brent Hinds and singer-bassist Troy Sanders trading vocals throughout the track.

At the end of the performance, Letterman invited Mastodon to "go over to [George] Clooney's hotel and tease him a little bit, that was my idea." Is George Clooney (who was a guest earlier on the show) an undercover metal head? One can never know.

Masrodon will tour with Dillinger Escape Plan and Red Fang this fall. Be sure to check out Loudwire's exclusive interview with Mastodon drummer Brann Dailor and check out how you could win a signed Mastodon drum head prize pack.

Watch Mastodon Perform 'Curl of the Burl' on 'Late Show With David Letterman'