Three-Concert Series in Sanders Theatre, Cambridge. The 72nd Season ('11-'12) features BEETHOVEN’s “Missa Solemnis” in November; “J.S. Bach & Sons, Inc.”, a celebration of motets including those by C.P.E. &. J.C.F. BACH, in March; HONEGGER’s oratorio, “King David,” in May. Also: Annual "Messiah" Sings in December and Summer Sings on 8 Tuesday evenings are open to all; plus educational/outreach efforts.