Yanni,
My suggestion is -
Why not study the life and music of the composer, G. Cocchi ?
In the meantime here is another important name in the Mozart story - no doubt yet another alias of your G. Cocchi, yes ?
'A. Rosetti'
Horn Concerto in E-flat major
(Murray C47): (c.1782)
I. Allegro moderato
http://www.youtube.com/watch?v=yEw23...eature=related
Not forgetting -
J.M. Kraus
March
http://www.youtube.com/watch?v=pwpzD...eature=related
(The relationship of this work by Kraus re-arranged in 1789 in Sweden of the March in 'Mozart's' Idomeneo of 8 years earlier is pure coincidence, of course ! And, the fact Kraus lived close to Mozart for months in Vienna - that too is pure coincidence. Like all the rest. LOL)
'W.A. Mozart' (actually J.M. Kraus) - Munich - January 1781
March
Idomeneo
http://www.youtube.com/watch?v=Ys1wW9bXxVw
Honestly, Yanni, 'Mozart's' music is the product of MANY composers, arrangers, music editors etc.
And here is Cartellieri - the real composer of the 'Mozart' Clarinet Concerto (KV622)
Casimir Anton Cartellieri (1772-1807)
Concerto for 2 Clarinets
Adagio Pastorale
http://www.youtube.com/watch?v=C6DVRzBsLbQ