Zac Brown and the Foo Fighters Cover Black Sabbath on Letterman

Zac Brown and the Foo Fighters were scheduled to appear and perform of the 'Late Show with David Letterman' last night, but I never thought they would sing the song that they did!

Yesterday I told you that Zac Brown was going to join Dave Grohl and the Foo Fighters for a performance on the 'Late Show with David Letterman.'

Believe it or not I'm a big fan of Ozzy Osbourne and Black Sabbath.... So I found the cover of 'War Pigs' awesome and surprising! I figured they would do 'Times Like These' because Zac covers that song on his tour every once in a while....

Needless to say I was rocking out late last night! I'm sure Ozzy was proud!