Influential Viennese composition teacher 1820-60. Students included Bruckner, Henri Vieuxtemps, Franz Lachner, Johann Nepomuk Fuchs, Gustav Nottebohm, Anton Door, Karl Umlauf, Béla Kéler, Nina Stollewerk, Sigismond Thalberg, Adolf von Henselt, Anton de Kontski, Kornelije Stanković and Theodor Döhler.