Vienna, Dec. 7, 1805.

I, the undersigned, am glad to bear testimony to young Carl Czerny having made the most extraordinary progress on the pianoforte, far beyond what might be expected at the age of fourteen. I consider him deserving of all possible assistance, not only from what I have already referred to, but from his astonishing memory, and more especially from his parents having spent all their means in cultivating the talent of their promising son.