In January, 2020, Alchymy Viols underwent some friendly alchemy to become an ensemble of singers and instrumentalists perfect for the performance of Marc Antoine Charpentier’s 11th and final mass, first performed at the Sainte Chapelle in Paris, probably during the feast of the Assumption in 1699. We’ll hear some of that splendid mass and also Charpentier’s only Sonata among an oeuvre of well over 500 works.