dirty dancer= Billie Jean

and a whole bunch more. but i gotta say they are 2nd tier because not only they sold but had hits and also them boys were nothing nice to have follow on a stage. Bar Kays in there prime live was the sho nuff truth even White boys gave them dap and took a cue from them ask David Lee Roth and Axel Rose about Larry Dotson on stage?

Bar Kays were the truth on stage and kept hits, etc.. 3rd tier to me is a act who might have a out of body hit or two or album and maybe a few decent tours and then faded, but the Bar Kays were in the running for quite a while.