OSSINING – Legendary musical performer Richie Havens will headline a benefit concert this Saturday. Havens and other musicians will be playing at Trinity Episcopal Church on Route 9 in Ossining, to help raise funds for an organization building housing along the Mississippi Gulf Coast to replace homes destroyed by hurricane Katrina, RiverBuild. The show starts 7:30 p.m., and tickets are $45 in advance, and $50 at the door. Local organizers have been travelling to Mississippi to assist with the re-building efforts there since the hurricane struck in 2005. Rochelle Harper, a musician from the Gulf Coast, will open the show. Havens is a singer and guitarist who performed at Woodstock and many other premier music venues.