Yeah, that’s right, they were the Darlings on the show. Actually, in playing around trying to answer this I did discover another jazz euphonium player, Kiane Zawadi.
https://www.youtube.com/watch?v=ZZeFwIoBPLs
He played quite a bit with Freddie Hubbard and Cornell Dupree among many others. I am embarrassed that I didn’t know about him since he is a fellow son of the Motor City. His links to Andy Griffith I will leave for someone else to uncover.