The "Big Four" ??? Metallica, Slayer, Megadeth, and Anthrax, are confirmed for the Romanian edition of the Sonisphere festival, on June 26, 2010 at Romexpo Exhibition Centre in Bucharest. Tickets are on sale now. For more info, go HERE. Megadeth is also confirmed to play the Sonisphere festival in Madrid, Spain on July 10, 2010. Tickets are on sale now. For more info, go
