Tenacious D (Jack Black's funnyman rock 'n' roll shtick) will replace the ailing Beastie Boys at the upcoming Outside Lands Festival. Ta-da. (If you recall, doctors discovered a cancerous tumor in Adam Yauch's left parotid gland, so BB had to cancel both their tour and upcoming album release.)

Obviously, Leighton Meester wasn't available to do the gig, so you will have to wait to hear "Body Control" live, the way it was intended to be heard. Alas. But we're sure many of you enjoy Tenacious D, so... good for you.

For those of you unfamiliar with the duo, listen to some of their aural pleasure after the jump.