Verse 2 and verse 3 of the sequence Veni sancte spiritus (Cantus ID ah54153) quoted in T1 and T2 alternatively (passage "Virgo carens simili ... possimus in gloria"):
According to MACEY 1996, 171-73 and 208:
1st phrase of the hymn Ave maris stella (Cantus ID 008272) quoted in T1 (passage "gaude virgo salutata" ... end of folium):
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".
In all the extant sources but the Libroni this motet is transmitted following the motet M292 O genitrix gloriosa. According to WARD 1986, 511-512, O genitrix gloriosa and Ave virgo gloriosa Maria mater gratiae are two separate compositions (and not a motet divided in two parts, as in the CMM edition), as indicated by the absence of custodes between them in all but one source (MotettiA). RIFKIN 2003, 263, points out that the oldest source in which these two motets are paired is I-Fr Ms. 2794, “a source written at or near the French royal court, very probably between 1486 and 1488”. SCHMIDT 2017, 26, adds that “The piece had thus reached the French court by the 1480s, possibly brought there by the composer himself; by this time it had emancipated itself from the Milanese tradition and had become a proper motet”.
O genitrix gloriosa was copied in I-Mfd 3, ff. 51v-52r.
Concordances (of the two paired motets) in mss. that do not transmit motet cycles: I-Fr Ms. 2794, ff. 9v-11r; I-Sc K.I.2, ff. 182v-184.
In all the extant sources but the Libroni and DK-Kk MS Ny Kongelige Samling 1848 2°, this motet is transmitted followed by the motet M282 Ave virgo gloriosa Maria mater gratiae. According to WARD 1986, 511-512 O genitrix gloriosa and Ave virgo gloriosa Maria mater gratiae are two separate compositions (and not a motet divided in two parts, as in the CMM edition), as indicated by the absence of custodes between them in all but one source (MotettiA). RIFKIN 2003, 263 points out that the oldest source in which these two motets are paired is I-Fr Ms. 2794, “a source written at or near the French royal court, very probably between 1486 and 1488”. SCHMIDT 2017, 26, adds that “The piece had thus reached the French court by the 1480s, possibly brought there by the composer himself; by this time it had emancipated itself from the Milanese tradition and had become a proper motet”.
Concordances (of the two paired motets) in mss. that do not transmit motet cycles: DK-Kk MS Ny Kongelige Samling 1848 2°, pp. 286-287 (ascribed to Richafort); I-Fr Ms. 2794, ff. 9v-11r; I-Sc K.I.2, ff. 182v-184.