新音楽時報
On 6 February 1836, Robert Schumann wrote an article in the "Neue Zeitschrift für Musik" comparing the significance of études written by various composers. Bach, Clementi, Cramer, Moscheles and Chopin were considered "the most important", while Kessler was described as "merely capable". On the other hand, Schumann said of Kessler: "Mann von Geist und sogar poetischem Geist".