Trivium have been confirmed to perform on the second annual Sounds Of The Underground Tour this summer, joining an impressive line-up also featuring As I Lay Dying, In Flames, Cannibal Corpse, GWAR, Terror, The Black Dahlia Murder, Behemoth, The Chariot, and Through the Eyes of the Dead. Select cities will also see some special guest performances, including Killswitch Engage in Mansfield, MA on July 14, Shadows Fall, It Dies Today and Still Remains for the Phoenix and San Diego shows, and, starting in Orlando, FL on July 19, Evergreen Terrace. The SOTU extravaganza will begin in Cleveland, Ohio, on July 8th this year, and run for the better part of the summer. Tickets will be available through a pre-sale via Artist Arena on April 11 at noon local times. Check the re-launched SOTU website to join the join the SOTU fan club and read full details.