Mick Ralphs, guitarist for Bad Company and Mott The Hoople:
https://en.wikipedia.org/wiki/Mick_Ralphs
Bobby Sherman, late 60s-early 70s teen idol singer:
https://en.wikipedia.org/wiki/Bobby_Sherman
I never cared much for Sherman's music. But he and Fabian, another former teen idol, were hilarious as the bad guy's henchmen in the movie
Get Crazy.