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Metallica are set to play Sonisphere Festival next July.
The American heavy metal band, who have just completed their mammoth two-year Magnetic worldwide tour, will be headlining the festival alongside Slayer, Megadeth and Anthrax - collectively known as the 'big four'.
Metallica drummer Lars Ulrich said: "I am beyond psyched that the first 'big four' show in Western Europe will take place on the hallowed grounds of Knebworth, where so many unique and special gigs have happened over the years - there is simply no better venue for a European round two of the big four!!
"Put your dancing shoes on, this is gonna be fun!"
Lars continued: "As soon as the Big 4 gigs started rolling across Sonisphere festivals in Eastern Europe last summer, we all felt we were part of something special - the vibe within the bands was more than anyone had anticipated and the vibe with the fans was so next level, it completely blew our minds... there was no way this should not happen again!"
The festival takes place in Hertfordshire between July 8 to 10.
