Aston Magna Music Festival presents  “Mostly Monteverdi.” Vocalists Aaron Sheehan and Jason McStoots, tenors; Adam Pearl, harpsichord; Cameron Welke, theorbo; Laura Jeppesen, viola da gamba; Scott Metcalfe and Daniel Stepner, baroque violins. Free, donations welcome. Link to the event July 10 at 7 p.m., at astonmagna.org/july-10