NATIONAL
- American Guild of Organists
- Organ Historical Society
- American Choral Directors Association
- Early Music America
- American Theatre Organ Society
LOCAL
- Worcester Hills Recorder Society
- Assabet Valley Mastersingers
- Mastersingers of Worcester
- Salisbury Singers
- Worcester Chorus
- Worcester Chamber Music Society
CONCERT VENUES
- Mechanics Hall (1864 IV/64 Hook)
- Worcester AUDitorium (1933 IV/119 Kimball)
- Hanover Theater (Wurlitzer)