Robert Layman / Staff Photo Blues musician Guy Davis carries three guitars inside the Marble Valley Regional Correctional Facility in Rutland Friday afternoon. Davis and harmonica player Fabrizio Poggi performed a short set for the inmates and staff. In an interview with Herald's George Nostrand earlier this week, Davis said "I believe in the power of human beings to over come...I all look forward to all audiences. They feed me. They feed my soul."