Dave Mustaine

With former Metallica members Dave Mustaine and Jason Newsted both on Gigantour this summer, there has been rampant speculation the two would jam an old-school Metallica song from the band's Mustaine era.

Former Metallica members Dave Mustaine and Jason Newsted are heading out on tour together -- Mustaine with Megadeth and Newsted with his new band Newsted. And the two metal giants say there's a possibility that they may play some tunes from their old group.