The published works were the Concerto for Pianoforte and Orchestra, Op. 15, dedicated “À son Altesse Madame la Princesse Odescalchi née Keglevics”; the Sonata for Pianoforte and Horn, Op. 17, dedicated “À Madame la Baronne de Braun”; the Quintet for Pianoforte, Oboe, Clarinet, Horn and Bassoon, Op. 16, dedicated “À son Altesse Monseigneur le Prince Régnant de Schwarzenberg.” These three works were announced by Mollo and Co. on March 21. Furthermore, the music to “Prometheus,” arranged for Pianoforte (according to Czerny by the composer) and dedicated “A sua Altezza la Signora Principessa Lichnowsky, nata Contessa Thun,” published in June by Artaria as Op. 27; “6 Variations très faciles” on an original theme in G, announced by Johann Traeg as absolutely new on August 11, sketched in the preceding year but probably completed in this; the Sonatas, Op. 23 and 24, dedicated “À Monsieur le Comte Maurice de Fries,” announced on October 28; the six Quartets, Op. 18, dedicated “À son Altesse Monseigneur le Prince Régnant de Lobkowitz,” announced (second series) on October 28 by Mollo. The Pianoforte Concerto in B-flat, Op. 19, dedicated “À Monsieur Charles Nikl Noble de Nikelsberg,” and the Symphony in C, Op. 21, dedicated “À son Excellence Monsieur le Baron van Swieten,” were published by Hoffmeister and Kühnel of Leipsic certainly before the end of the year, since they reached Vienna on January 16, and were advertised there. An earlier Leipsic edition has not been found. The two Violin Sonatas in A minor and F major were dedicated to Count Moritz von Fries and were originally intended to be coupled in a single opus number (23), as appears from the preliminary announcement by Mollo in the “Wiener Zeitung” of October 28, 1801, and also by the designation of the second as “No. 2,” on a copy of Op 24. Sketches of the two found in the Petters sketchbook are evidence of their simultaneous origin.