Pope Gregory
(served 590-604)4
Léonin
(composed 1180-1190)10
Pérotin
(composed around 1200)11
Adam de la Halle
(b. 1245-1250)16
Philippe de Vitry
(1291-1261)17
Jacopo da Bologna
(fl. 1340-1360)18
Johannes Ciconia
(ca 1370-1412)24
Leonel Power
(ca. 1370s-1445)25