Oh, Michael Peter Smith is a good one! I wish i was closer..
He performs regularly with Anne Hills, who also tours with
Tom Paxton.

http://www.folkera.com/windriver/michaelsmith/bio.html
Michael is also in a quartet with Anne and a couple of
others Steve Gillette, Cindy Mangsen .

Frank, you pick the choice performers..I hope you have
a wonderful concert and a successful event!