Note: FallowsCat, 565-6; Mancuso, 125-7; RostirollaLC, 783-4, 847. Dufay setting ed. CMM1/vi(r), no. 5; DuffinD, 62; facs. in PlanchartW (Q15, Ox). Rz1563 setting a2 & Razzi melody from Pal173 ed. in LuisiLG, ii, 137-9; Mancuso, 270-76. Text ed. in LG, i, 269 (attr. to Giustinian in many sources). See ‘Vergene bella gratiosa et pura’ in Ven145, w/melodic similarities. Later settings of text by Tromboncino (1510), & Rz1563, w/some melodic similarities (JeppesenF, ii, 105). In Pal173, Razzi presents a cantus melody for the first two lines, and this differs completely from either Dufay’s chanson or Rz1563.