Baritone Mischa Bouvier was vocally and dramatically larger than life as the bumbling giant and murderous monstrosity that Polyphemus is. His gruesome act of crushing Acis under a stone leads to one of the baroque’s saddest musical moments, in which the chorus sings, unaccompanied, “Ah, the gentle Acis is no more,” and the members of the excellent ABS chorus, for just a moment, managed to bring time to a standstill.