Mark the calendar for Saturday, Aug. 17 and plan to enjoy an Organ Sampler Concert, hosted at a pair of locations in Sonora.

The Sonora Bach Festival presents organist Dr. Daryl Hollinger; first, at 2 p.m., The Red Church, 42 Snell St. will be the scene to hear Haydn and Lübeck on the Red Church’s historic 1973 Flentrop Pipe Organ. Then, at 3:30 p.m. at St. Matthew Lutheran Church, 13880 Joshua Way, hear Prelude, Fugue and Chaconne by Dieterich Buxtehude and more on St Matthew’s 2016 Allen Digital Organ. There will be a lecture-recital at both locations. Free admission; a donation will be taken.

For more information, visit www.sonorabach.org or call 209-536-6330.