Before Notre Dame and Alabama tee it up Monday night to battle it out for the BCS Championship, Zac Brown Band will be doing the honors of performing the National Anthem in front of a packed house at Sun Life Stadium. Not to mention the millions of rabid college football fans that'll be watching the game on TV. But that doesn't faze ZBB. This ain't their first rodeo. In fact, they've lent their rich harmonies to many a rendition of the "Star Spangled Banner" over the years. Check out their performance before the NFC Divisional Playoff Game between the Green Bay Packers and Atlanta Falcons from 2011.