Guillaume de Machault (1300-1377)
Guillaume Dufay (1397-1474)
Motets
David Cordier, Paul Gerhard Adam, Kai Wessel - altus
Wilfried Jochens, Gerd Türk, Knut Schoch - tenor
Ensemble Helga Weber
Recorded in 1990/91
Label: IHW 3.108/I-III
N.B. The original release came with a 180-page booklet
Details: http://www.medieval.org/emfaq/cds/rnr108.htm
Some relevant scans included
Courtesy of Thomas Cadfael