The Margrave of Meissen founded St. Thomas' priory for Augustinian Canons ("Augustiner-Chorherrenstift zu St. Thomas") in 1212. A school was annexed to the monastery, the intended purpose of which was to develop future priests. Since the Reformation in 1539, the school and the choir have belonged to the city of Leipzig; it is also influenced by the Protestant Church of Saxony. This makes the Thomanerchor the oldest cultural entity in the city and one of the oldest in Europe; the Regensburger Domspatzen is the oldest known choir on record. When Johann Sebastian Bach served as director, the choir consisted of about 50 singers, of which the best 16 were used for performance of cantatas. After Bach's death, other famous musicians served as director, among them Doles, Hiller and Moritz Hauptmann.