Details about the festival are available at: http://www.fsgw.org/wff.htmAmong the Mudcatting performers:
Sidekicks with Lisa Null features SongBob, George Stephens (LaMarca's SO), and Lisa Null (Charlie Baum's SO)
Ferrara is singing in the Civil War Songs Workshop on Sunday.
Bill D is up to his ears (or other anatomical parts) managing the crafts.
Charlie Baum (that's me) is on the program committee and hosting a workshop in Vocal Styles of the World on Saturday afternoon.
I've probably left out others on the schedule, and there's LOTS of jamming space under the trees if you just want to make music. There are some moderately "big names" including Joe Hickerson and Ed Trickett. One of the limiting factors is that you can't perform unless you live and/or work in the Greater DC area.
--Charlie Baum (not totally disinterested, since he's on the program committee of this thing!)