Composition from the year 2019 in the subject Musicology - Miscellaneous, language: English, abstract: This set of Op. 3 keyboard sonatas are composed by Joseph Anton Steffan during his career in the household of Count Frantisek Slik in 1741-1775. There are three parts of these sonatas, but part III is apparently lost. The part II sonatas were published between 1763 and 1771 in Vienna. The title for this source is Parte seconda del Opera terza continente III Sonate per il Clavicembalo and was sold by Agostino Bernardi in Vienna. The source is located in Bayerische Staatsbibliothek Musiksammlung in Munich (D-Mbs 2 Mus Pr. 2486). There are five exiting copies including the source; the other copies are located in Gesellschaft der Musikfreunde in Austria, Kloster Einsiedeln Musikbibliothek in Switzerland, Národní Muzeum in Czech, and a Collection by André Meyer in France.