Zac Brown Joins Foo Fighters for Black Sabbath Classic “War Pigs” [VIDEO]

Zac Brown can flat out tear it up. If you have ever seen him in concert you know that he and his band could just jam all night. Artists from other genres of music also love Zac and want to jam with him. He and Dave Grohl of the Foo Fighters and former member of legendary band Nirvana, recently appeared on the David Letterman Show and did a wicked cover of the old Black Sabbath classic "War Pigs". If you still have some old heavy rock and roll in your soul you will dig this big time.

Check it out for yourself here.

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