Motetus Medieval polyphony in its manuscripts
Piece

Tu claviger eteris magister ceteris

No composer named in the sources used here.

Sources

ManuscriptFolioNo. in the sourceVoicesGenreDateSource
Burgos, Monasterio de Santa MarĂ­a la Real de Las Huelgas, Las Huelgas Codex f. 111v 117 2 motet c. 1300 source