Update 2/6: Korn have issued an official video for their collaboration with Slipknot on Beastie Boys' 'Sabotage' shot by their videographer Sebastien Paquet and Strati Hovartos. Watch it above.

Korn and Slipknot are getting pretty familiar with each other while on tour together. The bands toured North America last fall and are in the midst of a new leg in Europe. During a show at London's Wembley Arena, Korn welcomed Slipknot's Corey Taylor and other masked members onstage for a cover of Beastie Boys' 'Sabotage.'

The band had hinted earlier in the week that something was afoot with Slipknot and they paid it off with the cover. Fan-shot footage can be seen above and a teaser clip from the show can be seen at this location. The full video is expected to surface online soon.

After their tour with Slipknot ends, Korn will return stateside to headline the Epicenter festival in Los Angeles on March 14 and the Pot of Gold festival in Tempe, Ariz. on March 17. Appearances at Welcome to Rockville and Carolina Rebellion are also on the schedule for April, before the band returns to Europe for festival season in June and July. See all their stops here.

As for Slipknot, after the European 'Prepare for Hell' tour wraps, the Fort Rock festival and Welcome to Rockville festivals await in late April. Then the band starts their spring 'Prepare for Hell' North American dates with Hatebreed in late April and May. Dates can be found here.

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See the Yearbook Photos of Corey Taylor and Other Rockers