The piece served as the Benedictus part of the Sanctus of the Missa 'Quant j'ay au coeur' (where it sometimes appears with a si placet 4th voice) but also led an independent existence as an a3 instrumental work
V-CVbav-ms-Capp.Giulia.XIII,27: Composer name in ms = 'Ysach' / Title as in ms (index) = 'Benedictus' / Text: incipit 'B[e]n[e]dict[us]' only
