2 pp. of a bifolium. Quarto (200 x 250 mm). Vienna, July 12, 1823. In black ink. Integral address panel with "CC" blindstamped to seal. In German (with translation). Paper watermarked with a horn inside a crowned shield. Czerny responds to Probst's request for submissions of works for publication; he is very busy teaching but hopes to offer something to Probst's "noble and dignified" publishing house in the autumn. ".Since my main occupation (that is, teaching lessons) deprives me of 11 to 12 hours daily during this demanding season, I would not have been able to satisfy your request. Although many [pieces] now approaching completion (trios, quartets, variations, rondeaus, songs, etc.) have been promised to other publishers, I hope at the latest by the middle of autumn to add my name. to the interesting list of artists that your catalogue contains, and I ask you to trust that from that time on I will endeavour to satisfy your honourable requests with pieces in any genre." Slightly worn, browned, and soiled; creased at folds; remnants of red wax seal to lower margin of second bifolium with corresponding small seal tear with minor paper loss to blank margin. The noted pianist and pedagogue Carl Czerny was a prolific composer: from the publication of his first works in 1818 his compositions were in high demand and his output contains nearly a thousand original pieces and hundreds of arrangements. Heinrich Albert Probst (1791-1846) founded his publishing firm in Leipzig in 1823. It was acquired by Carl Kistner in 1831, after whom it was named from 1836. Czerny would not go back on his promise given to the publisher in the present letter. Beginning in the next year, Probst (and then Kistner) would publish dozens of Czerny's works, including the Piano Sonata No. 4 (Op. 65) and Nos. 7-9 (Ops. 143-5), the Concerto for Piano Four Hands (Op.153), the Décaméron musical (Ops. 110-1, 175-6, 251-2), and arrangements of Beethoven symphonies. A significant letter documenting the beginning of an important relationship between Czerny and Probst, dating from his publisher's first year in business.