Leopold Mozart was not a little annoyed by this act of friendship, which he was inclined to ascribe to the Kapellmeister Schmidt or to the organist Seyffert. It need scarcely be said that this "programme-music" is innocent either of originality or of instrumental colouring. Short characteristic pieces, such as Couperin and Rameau wrote, were composed by L. Mozart, in common with Eberlin, for a kind of organ with a horn stop, which had been erected by Joh. Roch. Egedacher on the fortifications above the town. Once a month, morning and evening, a piece was played on this instrument; in February it was the Carnival, in September a hunting song, in December a cradle song.[10011] Besides all this, L. Mozart wrote many concertos, particularly for the flute, oboe, bassoon, French horn, or trumpet (one of these is in Munich), innumerable trios (he offered a flautist, named Zinner, in Augsburg, fourteen trios for flute, violin, and violoncello), and divertimenti for various instruments,[10012] marches, minuets, opera-dances, &c. Three clavier {CHILDHOOD.} (12) sonatas are printed,[10013] of which Faiszt remarks that they might well be the work of Leopold's great son, so strong is their similarity in form and spirit.[10014] is compositions were for the most part only in manuscript, as was almost all the music of that day.[10015] By way of practice in engraving, he engraved three trio sonatas himself in 1740, and revived the old accomplishment in 1778, when he engraved some variations for his son. In later years he composed little or nothing; his position in Salzburg was so little to his mind that he did not feel himself called on to do more than his duty required; besides, the education of his children engrossed his whole time, and when his son had come forward as a composer, he would on no account have entered into competition with him.[10016] L. Mozart was proud of the estimation in which his works were held abroad, as the following extract from a letter to his friend Lotter shows: November 24, 1755. I may tell you in strict confidence that I have received a letter from a distant place inviting me to become a member ------ don't be alarmed--or--don't laugh ---- a member of the Corresponding Society of Musical Science.[10017] Potz Plunder! say I. But do not tell tales out of school, for it may be only talk. I never dreamt of such a thing in my life; that I can honestly say. But the elder Mozart acquired his chief reputation as a musician by the publication in 1756 of his "Attempt towards a Fundamental Method for the Violin."[10018] This work was {L. MOZART'S VIOLIN METHOD.} (13)