It's finally happening. The Big Four have announced an appearance in the United States. WOO! In case you aren't up to speed, this is going to be the most epic show to ever happen in alternative music. We're talking Metallica, Anthrax, Slayer and Megadeth together at last. I don't even need to say more. They are playing their own festival on April 23rd at the Empire Polo Club in Indio, CA. Get your tickets the day they go on sale (January 28th, 10AM PST, Ticketmaster) because they won't last long. At all.