Thrash legends Metallica, Slayer, Anthrax and Megadeth, who toured together under the moniker "The Big Four" across Europe last year, have announced their first, and only at this point, joint show in the US. The event will take place April 23rd at the Empire Polo Grounds, the same venue that hosts Coachella, in Indio, California. Tickets go on sale Friday, January 28th at 1PM ET on Ticketmaster.com. Watch a trailer for the show below.