Joseph Rheinberger’s “Suite for Organ and Violin,” Op. 166, and “Six Pieces for Organ and Violin,” Op. 150, will be performed in Helena at the Cathedral of St. Helena, 530 N. Ewing St., on Saturday, May 18, at 7:00 p.m., by organist Barbara Gulick FAGO and violinists Ali and Sara Levesque, all of Billings. Sponsored by the Yellowstone Chapter of the American Guild of Organists, the concert is offered in memory of Dr. Fred B. Binckes (1936-2018), Professor Emeritus at Rocky Mountain College, and is free. Donations to the AGO New Organist Fund will be appreciated.