Motetus Medieval polyphony in its manuscripts
Piece

O speculum monachorum

No composer named in the sources used here.

Sources

ManuscriptFolioNo. in the sourceVoicesDateSource
Burgos, Monasterio de Santa MarĂ­a la Real de Las Huelgas, Las Huelgas Codex f. 156 180 1 c. 1300 source