human
He loved his art with a fervor at once enthusiastic and sincere, says Forkel.
gpt
Not only has he informed us in detail as to Bach's methods of teaching composition, but the musical world is still his debtor for the first logical system of harmony, founded upon the works of his master. The first of these sources of information is his book, _Die Kunst des reinen Satzes_; the second, _Grundsätze zum Gebrauch der Harmonie_. He furthered the interests of musical art by other treatises as well as by his compositions. Particularly charming are his works for the clavecin. Princess Amelia of Prussia was one of his pupils.