5 pm the group Acronym. A program of music played at the court of the Swedish Queen Christiana,  Corelli, Scarlatti, Cavalli, others.  Chamber orchestra of strings, harpsichord and theorbo. 

8 pm a chamber performance of the opera Alcina, by Francesca Cavalli, the oldest opera with a female composer. 

A chamber performance means no sets, some costumes, minimal props.  Orchestra on stage with the singers.  Still works quite well.