Some portions of the Miserere were taken from Baini, but the greater part were allegri's.
Some of his pictures are signed; "Leito," a synonym for his name, "allegri."
With regard to the allegri di Bravura, I shall pardon yours.
It was here that the celebrated Miserere by allegri was performed.
As for the allegri di Bravura, I must make allowance for yours.
On some of his pictures Correggio signed “Lieto,” as a synonym of “allegri.”
Candidly I am not a friend of allegri di bravura and such, since they do nothing but promote mechanism.
Even in allegri's earliest works it was prominent, and later he became the acknowledged master of it.
On this first day, two compositions of allegri and Baini were given, and each of them repeated once.
Thus Mozart, at two hearings, was able to note down the score of allegri's Miserere.