Dates and times are subject to change by organizers. Please visit the organizers’ website for the latest information.

Aston Magna — America’s longest-running festival of music on period instruments, now in its 53rd season — continues its Waltham series with “Bach in Potsdam, Telemann in Paris: Telemann’s Quadro and Quartet in E minor, C.P.E. Bach’s Sanguineus und Melancholicus, and excerpts from J.S. Bach’s Musical Offering.”
Performers: Peter Sykes, harpsichord; Andrea LeBlanc, transverse flute; Daniel Stepner, baroque violin; Laura Jeppesen, viola da gamba. At Slosberg Music Center, Brandeis University, 415 South Street. Tickets: $50 in advance, $60 day of show; $15 under 30 with ID; full-time students (with ID) and children free; $2 for EBT, WIC & ConnectorCare cardholders through Card to Culture.
Order tickets online or 888-492-1283.