- Altman Kellner
- , revised by Robert N. Freeman
Benedictine abbey in Upper Austria. It was founded in 777 by Duke Tassilo of Bavaria to provide a Christian mission and to protect the area from the neighbouring Slavs and Hungarians. Plainchant was sung according to the Beneventan rite, which, along with the educational system, was modified according to the rules of Benedikt von Aniane of Aachen in 828. From that time until the 17th century there was an inner and an outer school: the latter was enlarged in 1549 into an Öffentliches Gymnasium. The abbey library has a rich collection of manuscripts, one of the most important in Europe. The Millenarius Minor Manuscript, a collection of gospels dating from the end of the 9th century, contains one of the earliest examples of neumatic notation; a number of manuscripts containing sequences and tropes give evidence of musical practice from the 11th century to the 14th. Polyphonic music found acceptance under the abbot Friedrich von Aich (abbot from ...