Notker Balbulus (c. 840–912), the earliest known composer, was a monk at the Benedictine Abby of Saint-Gall in Switzerland who wrote history and poetry. Notker (his name Balbulus means "the stutterer") wrote poems and accounts of the lives of a number of saints. His rather idealized history of the life of Charlemagne (The Deeds of Charles theGreat) is still consulted as an historical document. His most important contribution to music was the Liber Hymnorum (Book of Hymns) which contains a set of 33 sequences that he composed. These.....