Eddy Mul 'Johannes Kepler and his influence on organ music'
het ORGEL 95 (1999), nr. 1, 5-13 [summary]

The astronomer Johannes Kepler (1571-1630) influenced the Lutheran baroque concept of harmony. Central aspects of Kepler's ideas are geometry and harmony. To Kepler, the cosmos is of geometrical nature in every respect (music, astronomy and astrology). Kepler mentions harmony in his writings after having stated that the planetary orbits are oval, not circu-lar. In Kepler's opinion, these oval movements serve a purpose: they form melodies. In this way, God, the creator of the cosmos, is in fact also the creator of harmony. This idea is important in the Lutheran baroque concept of harmony, too, in which the divine origin of music is confirmed. The influence of Kepler on this concept can be detected by analysing organ literature, for example the organ works by Johann Heinrich Buttstett (1666-1727). Of course these analy-ses have to be based on the way of thinking, feeling and hearing that prevailed in his time and in his environment In this way, it is possible to show that organ music like Buttstett's refers fundamentally to the creator of music. This creator is the Holy Trinity, who also created heaven and earth, and who connected heaven, earth and music firmly to each other from the very beginning.