Heinrich Isaac, Coralis Constantini, primus tomus
(Nuremberg: Formschneider, 1550)
Volume I of Choralis Constantinus, containing mass propers for Sundays throughout the year.
Facsimile edition:: Ed. Edward R. Lerner (Peer: Alamire, 1990).
Modern edition: Ed. Emil Bezecny and Walter Rabl, Denkmäler der Tonkunst in Österreich 5/I (Vienna, 1889).
Source of pieces in Choralis Constantinus II:
Choralis Constantinus I is based on sources from Munich that contain Imperial repertoire transmitted to Munich by Ludwig Senfl. That repertoire includes three pieces that are also found in the Constance set, all with different liturgical assignmens. The surviving set of Munich manuscripts is incomplete and covers only the period from Advent through Lent; it includes Communion 5, but not the other pieces shared by Choralis I and Choralis II. Although the borrowing from one of these repertoires to the other could conceivably have happened in either direction, it is most likely that the shared pieces originated in the Constance repertoire and were then incorporated retroactively into the Imperial repertoire. This hypothesis is supported by both musical and liturgical arguments. The Constance liturgical assignments are more standard and more logical, especially in the case of Communion 14, which is specifically applicable to Mary Magdalen, but has no relation to the 22nd Sunday after Pentecost. The musical styles of the numbers also match the style of the Constance repertoire, not that of the Imperial repertoire.
Choralis Constantinus II contents:
- Mass 4
- Introit-Suscepimus (8th Sunday after Pentecost)
- Mass 5
- Communion-Ecce virgo concipiet (4th Sunday of Advent)
- Mass 14
- Communion-Dico vobis (22nd Sunday after Pentecost)