So to Eastminster United last night for the opening concert of the Toronto Bach Festival. We got three concerti bookended by (I think) a sinfonia from one of the cantatas; an excuse to show off the trumpets and timpani recruited for Sunday’s oratorios, and an arrangement of the Air on the G String. Festival director John Abberger contributed a scholarly programme note on the general issue of Bach concerti. Bottom line, there aren’t very many of them but they can be rearranged for a pretty wide range of instrumental options. Last night we got the Concerto for Oboe BWV1056, Concerto for Flute, Violin and Harpsichord BWV 1044 and the much better known Brandenburg Concerto No. 1 BWV 1046.