System Of A Down frontman Serj Tankian, Tom Morello and Disturbed star David Draiman were among the rockers who paid tribute to late Pantera guitarist "Dimebag" Darrell Abbott at a marathon party in Hollywood on Wednesday night.

The trio joined members of Pantera, Sebastian Bach, Duff McKagan and singer/songwriter Ben Harper at the Dimebag Bash, which annually honors the memory of Abbott, who was the victim of a crazed gunman at a concert in 2004.

The night's highlights included a version of Bruce Springsteen's "The Ghost of Tom Joad" performed by Morello and Tankian, and a reworking of Pantera's classic "Seek and Destroy," sung by Draiman.

Proceeds from the five hour tribute concert will benefit the late Ronnie James Dio's Stand Up and Shout charity.