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304 North Cardinal St.
Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
Masterclass – Percussion with Leon Lorenz
Leon Lorenz is the guest artist for OYSO’s November 18th 
performance of Gregor A. Mayrhofer’s “Recycling Concerto” (2021).
When: Monday November 16, 19h30-21h30
Where: Freimen Hall (Pérez Hall, 50 University Private), University of Ottawa