Would you like to better understand the structure and content of the Holy Mass? Do you wonder about the role of singing in worship, particularly the place of Gregorian chant and polyphony in our contemporary Church? Interactive workshop animated by Subdeacon Dr. Brian Butcher, co-director of St. George's Coram Deo Choir. St. George Parish Hall, Mon., Sept. 30, 6:00-7:30 pm. Free. Info: coramdeo@saintgeorges.ca.