The American Guild of Organists presents an evening of Baroque preludes based on Lutheran chorales and Gregorian chant, on an organ built in the style of David Tannenberg. The audience will also have the opportunity to sing each melody, accompanied by some of Rochester's finest organists. Performances by David McCarthy along with Bruce Frank, Thatcher Lyman, Maryanne Hamilton, Dianne Maynard-Christensen and Rob Ferris.