Metallica, Slayer, Megadeth and Anthrax ??? the "Big Four" of 1980s thrash metal ??? will headline the first night of next year's U.K. edition of the Sonisphere festival, set to take place July 8-12, 2011 at Knebworth Park. Dave Mustaine: "The "Big Four" concerts are the most important, most exciting event to happen in the history of live concerts in our genre, and perhaps the entire music industry. I am glad to be a part of this enormous celebration of thrash, speed, and good ole heavy metal!" For more information and tickets, visit uk.sonispherefestivals.com.
