The version of I-Mfd 1 is shorter than the one in I-Mfd 3 (the section starting with "Gaude virgo fruens delitiis" is missing). The motet is presented on two openings in the sources, connected by "custodes" and by the rubric "verte cito": in I-Mfd 1 the second opening starts with "Gaude mundi domina", in I-Mfd 3 with "Gaude virgo fruens delitiis".