For months we've been wondering when the wonderful story behind this picture of "Weird Al" Yankovic, Tenacious D and Reggie Watts would be revealed. Now, not only do we know, but we have a video. Thanks, Internet!

To be fair, we should really be thanking Scott Aukerman, host of "Comedy Bang! Bang!" on IFC, for bringing together these powerhouses of musical comedy. On this week's season finale, "Weird Al" joins Kyle Glass and Jack Black to perform “Rock is Dead,” from the D’s comeback album, "Rize Of The Fenix."

Be sure to watch the video until the end for to see how Watts gets involved and catch the full episode when it airs next Friday, Aug. 10 at 10:30 p.m. ET/PT on IFC.

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