The 125 counterpoints on "La Spagna" certainly belong to the most interesting works of Festa and probably even of his time and could be seen as a lifetime work. Even when it was considered as a pure 'scholastic work' with somehow too much use of strict technique and "construction", sometimes rather archaic and with pure mathematical logic, it remains remarkable that he wrote it as a compendium for learning how to sing and compose and to learn about all the secrets of counterpoint mastery. It must be seen as one of Festa's best and outstanding works.