It’s undoubtedly the wave of the future – a fully functioning robot band!

The German-based Compressorhead, which is made of up guitarist Fingers, bassist Bones, and 4-armed drummer Stickboy along with his hi-hat shuffling offspring Stickboy Junior, are making their debut as a ‘metal’ band this month at Australia’s Big Day Out 2013 festival. In preparation for their big gig, the self-proclaimed “World’s Heaviest Metal Band” was back home practicing Motorhead’s “Ace Of Spades,” one of the many covers they’ll performed during their set.

Check out the video here below to witness these metallic headbangers play “Ace Of Spades.”

According to the band’s Facebook page, their 15-song setlist will consist of such popular covers as Led Zeppelin’s “Whole Lotta Love” and “Rock and Roll,” The Ramones’ “Blitzkrieg Bop,” and Black Sabbath’s “Iron Man.” (Full setlist is below.)