Here's some.
Tony Saletan, Kossoy Sisters, Peter and Isabel Gardner, Dave Sear, Brock Peters, Al Arkin (the actor) Jackie Washington, Eric Von Schmidt, Ellen Stekhart, Anita Shearer, Betty Sanders, Ernie Lieberman, Pat Foster, Valucha, Ray Boguslav,
Roger Sprung, Cynthia Gooding, Rolf Cahn, Jo Mapes, Brother John Sellers, Eric Darling, Rachel Hadass, Pat Foster, Stu Jamieson, Woody Wachtel, Alan Mills, “Ti Jean” Carignan, Sonia Savig, Allen Block, Bob Gibson, Lorraine Hammond, Schlomo Carlbach, Fred Gerlach,
Joe Hickerson, Fiddler and Evelyn Beers, Paul Clayton, Fleming Brown, Win Stracke, Judy Henske, Terry Gilkyson, Rich Dehr, Katie Lee,
Rolf Cahn, Joe Mapes, Lingo the Drifter, Michael Janusz, Clabe Hangan, Allen Block, Bob Carey,
Vince Martin, Bob Camp (aka Hamilton Camp),
Cyrus Faryar, and there's so many more.

If I didn't get spelling right, my apologies.