During Volbeat’s hometown show at Telia Parken in Copenhagen, Denmark the band were joined onstage by Metallica’s Lars Ulrich, who played a cover of Metallica‘s “Enter Sandman” and Volbeat’s “Guitar Gangsters & Cadillac Blood“ with the band, Kreator‘s Mille Petrozza, who sang his parts on “7 Shots“, Napalm Death‘s Mark “Barney” Greenway, who sang his…