Thanks, cnd. BTW the "One Man Band" was Danny Bonaduce, who I recognized despite the fact that half his face was hidden behind an enormous drum, but that's what comes from watching a person for many hours. I watched every episode of "The Partridge Family" plus his appearances on "Bewitched."

Thanks also for solving the mystery. That must be Leonard Rumery! As far as I can tell, he was never with the Dillards or anywhere else where I would have seen him. He just looked really familiar.

I saw that "The Trouble With Girls" was on Internet Archive but the picture quality was so bad I paid to watch it on Amazon Prime.