Ut queant laxis - A Medieval Warmupby Guido d'Arezzo (c. 990-1050)
Translation: So that thy servants may sing the woder of thy deeds with relaxed vocal chords,
remove all guilt from their defiled lips, St. John.
Kyrie - Hildegard of Bingen (1098-1179)
soprano, organetto, harp, bell, rebec
O viridisima virga - Hildegard
soprano, symphonia, organetto, harp, rebec