Here it is, your weekend concert calendar! A little thin, b/c of the holiday weekend, but all the concerts below look excellent - you really couldn't go wrong.
Also, it's not choral, but check out the Post-Meridian Radio Players' presentation of "The Big Broadcast of October 30, 1938." It's two staged radio plays at the Somerville Theatre this weekend. My good friend Mike Veloso composed some of the music.
8:00 pm: Exsultemus; "Josquin and his Legacy"; Union Church, Waban
8:00 pm: Zefiro; "Lights and Shadows," featuring music of Victoria and Gesualdo; Church of the Blessed Sacrament, Providence, RI.
8:00 pm: Exsultemus; "Josquin and his Legacy"; University Lutheran Church, Cambridge
8:00 pm: The Harvard-Radcliffe Collegium Musicum and the Radcliffe Choral Society; "A Cappella Masterpieces"; Sanders Theatre, Harvard University, Cambridge.
3:00 pm: Exsultemus; "Josquin and his Legacy"; First Lutheran Church, Boston
3:00 pm: The Tufts Concert Choir, Chamber Singers, the Harvard-Radcliffe Collegium Musicum, and the Boston Modern Orchestra Project; "Choral Motets of the Millenium," featuring Lou Harrison's La Koro Sutro, a piece for chorus and American Gamelan; Distler Performance Hall at the Granoff Music Center, Tufts University, Medford. (This concert is FREE!)
4:00 pm: Schola Cantorum; ""Music of the Tudors," featuring Taverner's Small Devotion Mass and works of Sheppard, Fayrfax and Byrd; First Congregational Church, Hancock, NH.
Did I forget anything? Leave it in the comments!