The MIT Guild of Bellringers helps maintain and ring the eight bells of Boston’s historic Old North Church. The bells were originally cast in 1744 and most recently restored in 1975. The Bellringers memorize complicated “change ringing” arrangements—a 17-century English style of pulling full-circle church bells in a repertoire of repeating patterns, which might seem more mathematical than musical (perhaps part of the appeal for our MIT crew)!