X Thirdx Seasonx has 1 XTRMST concert.

XTRMST is an American straight edge hardcore band featuring Davey Havok and Jade Puget of AFI. This is their second side project after the electronic outfit Blaqk Audio. They released their self-titled debut album in 2014 on Steve Aoki's Dim Mak Records. XTRMST later added Chris Sorenson (Saosin) on bass, Josh James (Stick to Your Guns, Evergreen Terrace) on guitar, and Val Saucedo (Loma Prieta, Punch) on drums.