(GB-Lbl Add. MS 31390)No.113John Taverner, "(Dum transisset) Sabathum" John Taverner's same name piece in CPDL is not this piece. Cantus firmus part = Tenor2(fourth part) bar1-19 : A Part bar20-40 : B Part bar40-69 : C Part http://aeolianconsort.chakin.com/GB-Lbl_Add_MS_31390.htm#No101