Russian musician Артём Барабанович is only armed with an iPad, but still does some pretty killer metal covers. Watch as Барабанович rips right on through "Fuel" by Metallica, "My Sweetest Shadow" by In Flames, and "Hammer Smashed" by Cannibal Corpse without (presumably) breaking even the slightest sweat.
You can check out the rest of Барабанович's covers here.