In Bonn he was university professor of musicology, and active in the musical life of the city.
He became a senior teacher at the Gymnasium in Heidelberg, also joining the choral society of Anton Friedrich Justus Thibaut, a jurist and amateur musician.
[2] Becoming interested in music through Thibaut, he gave lectures in Cologne from 1821 to 1823 on his system of harmony, described in an article in the Allgemeine Leipziger Musikzeitung: "Breidenstein pursued, in a clever presentation, a path not trodden before.
He explains his system through the basic doctrines of philosophy and through the appearance of life and nature, and makes one understandable and clear by means of the other...."[2] In 1821 he graduated at Giessen with a dissertation "On the beautiful in music".
[1] He was active, as organizer and conductor, in the musical life of Bonn,[1] founding an orchestra and choral society.