I saw Blue Oyster Cult in the 70’s and they filled a huge coliseum type arena.
In the early 2000’s they played a local nightclub..................
Years ago I slept at the home of some friends, it started out New Year's Eve, and, I didn't want to get on the road to go home. Saw a "Behind the Music" for, hmm, REO Speedwagon. It described how when BOC was huge, RS got the opening act gig with them. About a year later, RS went on their first headlining tour, and BOC was the opening act. :^) BOC could have cleaned with a "Cities Aflame" tour during the nationwide Obama riots.