Six years later it’s still hard to believe. As fans around the world gather to remember the 30th anniversary of ex-Beatle John Lennon’s murder, a small but no less dedicated family of music fans will mark Wednesday’s (December anniversary of another shocking rock and roll death.

It was six years ago today that beloved Pantera guitarist “Dimebag” Darrell Abbott, 38, was gunned down in Columbus, Ohio’s Alrosa Villa rock club in front of 250 people by 25-year-old gunman Nathan Gale. As confusion reigned in the club, Gale jumped onstage at the beginning of a set by Abbott’s then-new band, Damageplan, pumping several bullets at close range into the guitarist before opening fire on the crowd and killing three others. A police officer responding to the scene killed Gale a short time later with a single shotgun blast to the chest.