[Footnote 40: He hoped to sell his three pianoforte concertos (238, 246, 271, K.)
to the engraver of his sonatas for ready money, and if possible his six
difficult piano sonatas (279-284 K.). Whether he succeeded or not I do
not know, but they do not seem to have been engraved. His father advised
him to insure his connection with the Parisian publishers for the
future. In a letter to Breitkopf (August xo, 1781), he mentions Trois
airs varies pour le clavecin ou fortepiano, engraved by Heyna, in Paris.
These are the variations on Fischer's Minuet (179 K.); on an air from
Salieri's "Fiera di Venezia," "Mio caro Adone" (180 K.), mentioned in a
letter to his father (December 28,1778); and on "Je suis Lindor," from
Beaumarchais' "Barbier de Seville" (354 K.).]