Cecilian Movement
The Cecilian Movement for church music reform began in Germany in the second half of the 1800s as a reaction to the liberalization of the Enlightenment.
The Cecilian Movement received great impetus from Regensburg, where Franz Xaver Haberl had a world-renowned school for church musicians. Their theoretical ideas were formulated by Ludwig Tieck, Friedrich and August Wilhelm Schlegel, Johann Michael Sailer, E. T. A. Hoffmann, and Anton Friedrich Justus Thibaut.