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Motorhead and Mastodon have been added to the line-up for this year's Sonisphere festival in Knebworth.
Other new additions to the bill at the event, which runs from July 8-10, include In Flames and Parkway Drive.
They join previously announced headliners Biffy Clyro, Slipknot and the Big Four - Metallica, Slayer, Megadeth and Anthrax.
Tickets are on sale now. For more details and to buy Sonisphere festival tickets, check out Gigwise Gig Tickets.
For more information about Sonisphere and all next summer’s festivals, check out the Gigwise Festival Guide.
Sonisphere 2010 - The Best Bits
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