A.k.a. The Cantigas de Santa Maria
The Cantigas de Santa Maria ("Canticles of Holy Mary"; Galician: [kanˈtiɣa̝s ðe̝ ˈsanta̝ maˈɾi.a̝]), Portuguese: [kɐ̃ˈtiɣɐʒ ðɨ ˈsɐ̃tɐ mɐˈɾi.ɐ], are 420 poems with musical notation, written in the Medieval Galician language during the reign of Alfonso X El Sabio (1221–1284) and often attributed to him.