 Befriending Ginn, Spot was briefly bassist for Panic, the band which would soon become Black Flag.Spot recorded, mixed, produced or co-produced most of SST's pivotal acts between 1979 and 1986.He is credited on albums by such notable bands as Black Flag, Minutemen, Mood of Defiance, Meat Puppets, Hüsker Dü, Saint Vitus, and Descendents.