Anybody who's heard Trivium's version of Metallica's "Master of Puppets" knows that Matt Heafy's James Hetfield impression is fucking spot-on. Well, he busted it out again on Saturday night in Louisville, Kentucky, when the band played a surprise cover of "Creeping Death," with guest vocals from members of opening band Motionless in White. Check out the audience-filmed clip above.

Trivium are currently on tour in North America; click here to find a show near you.

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