Sandra Singleton Barnhardt, a 1969 graduate of Morristown High School, will come home to Bethel A.M.E. Church, the oldest African-American church in Morris County, to host a benefit Saturday beginning at 6 p.m. A music educator and an accomplished musician, Singleton Barnhardt is the director of vocal music and conductor of the Cicely Tyson School of Performing and Fine Arts Concert Choir of East Orange.