Boston University School of Music presents the Boston University Baroque Orchestra. Music of Bach, Purcell and Vivaldi featuring concerti from Vivaldi's L'estro armonico. Program: Vivaldi Concerti from l'estro armonico • Bach Concerto in A major • Bach Concerto in a minor • Purcell Music from the Gordion Knot Untied. This event is free and open to the public.