Dave Grohl and Members of Metallica, Slayer + Pantera Cover 'Ace of Spades'Dave Grohl and Members of Metallica, Slayer + Pantera Cover 'Ace of Spades'The one-off supergroup covered the Motorhead classic in tribute to Lemmy Kilmister at the annual Dimebash in honor of the late Pantera guitarist Dimebag Darrell.Tim KaranTim Karan