The Ars Subtilior edition of the Missa Si bona suscepimus (SATB) by the famous printer Antonio Gardano (1509-1569) is based on the copy in Toledo Cathedral Codice 19 (copied by Martín Pérez, see the DIAMM page here for further details)
This Mass contains a counterpoint full of embellishments. The Agnus Dei III (there is no Agnus Dei II) ends with five voices (SATTB).
Our edition of the Missa Si bona suscepimus contains one version in original pitch and the other transposed a fourth down (according to chiavettes).
MIDI preview (transposed a fourth down)