A sweet Sunday morning concert has come together that includes the guitarist Mark Mazengarb of Loren and Mark, the Burns and Kristy Trio, and Cornerstone.   The set will begin with a solo guitar set by Mark at 9:30 am, following by a short set of original and cover songs of the spirit by Terry Burns, Ron Kristy and Janet Cotraccia.  Closing out the show will be a short set of gospel songs and instruments by Cornerstone.  Dee Specker, Dana Paul and Rick Manning will be joined for this set by special guest and former Cornerstone guitarist Tim Wallbridge.    This concert is free for ticket holders.  A $10 donation is requested for those who have not attended other festival events.