In 2009 Def15 saw 12 performances during 1 concert with 12 bands at 1 venue in 1 location.

Date   Concert   Venue   Location  
Jul 14, 2009
Rockstar Energy Drink Mayhem Festival 2009
Bullet for my Valentine / Marilyn Manson / Killswitch Engage / Slayer / All That Remains / Trivium / Cannibal Corpse / Whitechapel / The Black Dahlia Murder / Behemoth / Job for a Cowboy / God Forbid
  Setlists
White River Amphitheater Auburn, Washington, United States