This year's festival ran from about 9 AM until 2 PM. Because of conflicting reports about when it started (the official website said 10 AM, but news reports stated variously either 8, 9, or 10 AM) I didn't get there until the first performance was partway through. Performers this year included:

Erica Renee McKinney
The Cockman Family
Michael Combs
Patricia Smith
Dave Calvert Collective ("The Collective")
And New Covenant (linked elsewhere)

The performers this year battled through a persistent drizzle to perform. During Michael Combs' performance, the rain really started coming down. One of the more touching moments of the festival was when someone from the crowd came up and held their umbrella over him so he could continue singing.

I'm hoping to gather a more complete and coherent history together, but it may not be for a while. Until then, hopefully some other people can come across this thread and share some of their favorite memories of the event.