... When I started writing this collection of studies, I did so for a very specific reason:to justify the existence of some individual pieces for piano, written without a precisedestination or name, thus being an end in themselves.By grouping them together into a single collection, they would have more reasonto exist, and, for this, I decided to give each of them a specific imprint, a leitmotif,a focus for each piece, that is to say: a cell, a something that would ensure that thestudy was aimed at perfecting the student's specific technical deficiency in his orher piano playing... Antonio Molinini