For the 10th anniversary MusiCares MAP Fund benefit concert, which also honored Ozzy Osbourne and Black Sabbath, Metallica did something they rarely do - they went acoustic.

More than that, they performed a mini set comprised of nothing but classic rock standards - from Rare Earth and Deep Purple to the Beatles! They even did "Stairway to Heaven." Check out the footage of them performing "In My Life" and "Stairway..." below.

For more details about the performance, click HERE.