This Benedictus setting in three voices is presumably from the same mass as va003 and va005, according to the table of contents. In three voices, the plainsong is used as an ostinato, set in semibreves and minims, printed in red ciphers from b.16, but given five times prior to the introduction of the red figures, in imitation. Towards the end, the melodic intervals of the six-note ostinato are varied, making sense of the author’s title : “Here the plainchant ostinato is varied in many ways.”
Reprinted in Phalèse, Hortus Musarum, p.75 [Brown 1552-11, no 82], transcribed into letter tablature.