He is credited (in his letter to Luitward of Vercelli) with inventing the sequence—a sung prose added to the Alleluia of the Mass. His Liber Hymnorum contains 40 sequences (e.g., Media vita in morte sumus ). Pedagogically, these provided mnemonic frameworks for memorizing scripture and doctrine.
Notker Balbulus, also known as Notker of St. Gallen, was a medieval monk, scholar, and composer who lived in the 9th century. He is best known for his contributions to the development of medieval music and his work as a teacher and scholar. st notker school
Here are some key aspects of Notker's school: He is credited (in his letter to Luitward