A great number of clavier sonatas were written about the time during which Emanuel Bach flourished: his first sonatas appeared in 1742, his last in 1787. An interesting collection of no less than seventy-two sonatas (sixty-seven by various composers; five anonymous), issued in twelve parts, under the title _Oeuvres melees_ (twelve books, each containing six sonatas), was published by Haffner at Wuerzburg, somewhere between 1760 and 1767. And another collection of symphonies and sonatas, principally by Saxon composers, was published at Leipzig in 1762 under the title _Musikalisches Magazin_. We will give the names of some of the chief composers, with titles of their works, adding a few other details. It is difficult in some cases to ascertain the year of publication; and it is practically impossible to say when the sonatas were actually composed:-- BACH, Wilh. Friedemann. Sei sonate, No. 1,[19] D major (Dresden, 1745). Sonata in C (published in Litolff's _Maitres du Clavecin_), and others in D and G (autographs), and in F, A, and B flat (manuscripts). BACH, Joh. Ernst. Two sonatas (in _Oeuvres melees_). NICHELMANN, Christoph. Sei brevi sonate, etc., Op. 2; Nuremberg (between 1745-1756). HASSE. Two sonatas in E flat and B flat (manuscript; on one is the date of 1754). Two sonatas, one in D minor (only one Lento movement); the other in D major (only one Allegro movement in old binary form). These are both in the Leipzig collection named above. BENDA, Georg. Sei sonate (Berlin, 1757). Sonatas in G, C minor, and G, also seven sonatinas (Vermischte Clavierstuecke, Gotha, 1780). WAGENSEIL, Georg. Sonata (_Oeuvres melees_). Six sonatas for the harpsichord (with accompaniment for a violin).[20] Opera prima. (A. Hummel, London.) SCHAFFRATH, Christoph.[21] Six sonates, Op. 2 (published by Haffner, Nuremberg, 1754). MOZART, Leopold. Three sonatas (_Oeuvres melees_). MUeTHEL, Joh. Gottfr. Three sonatas, etc. (Haffner, Nuremberg, about 1753); three sonatas (autograph). UMSTATT, Joseph.[22] One sonata (_Oeuvres melees_). Sonata consisting of only a Minuetto, Trio, and Gigue (Leipzig collection). And the two Italians-- GALUPPI. Sonate per cembalo (London); and PARADIES, P. Domenico. Twelve sonate di gravicembalo (London). GRETRY, Belgian composer (1741-1813), wrote "Six sonates pour le clavecin" (1768), to which, unfortunately, we have not been able to gain access.