On Sunday, May 20, Mary Hamlin-Spencer will perform in the French Organ Music Marathon at Grace Methodist Church on Charles Street at Northern Parkway. This year marks the 20th anniversary of the French Organ Music Marathon, where eight local organists perform some of the great organ music from the French organ school for 20 minutes each on the large 5-manual pipe organ, which contains several thousand pipes. The Marathon begins at 2 p.m. and ends at 6 p.m. Mary will be performing works by Maurice Duruflé and Jehan Alain at 4 p.m. Admission is free, and there is handicap accessibility. Do come out and support her while getting a chance to hear her perform on a large concert instrument! The event is informal—come for some or all of it, as your time permits!