The Codex Las Huelgas is a significant early 14th-century musical manuscript containing polyphonic compositions, motets, and conductus created for the Cistercian convent in Burgos, Spain [1]. It serves as a crucial source for Ars Antiqua music, featuring 186 pieces that bridge the Notre Dame school and emerging European styles [1]. Information and recordings can be found through the Biblioteca de l'Abadia de Montserrat or academic databases.