son of Ignatio Fiorillo (1715—1787) a Neapolitan opera composer who spent most of his life as a Kapellmeister in Braunschweig and Kassel, North Germany Opus numbers are confused because Hummel of Berlin used different numbers from Sieber of Paris. Thus Hummel's Op.3 is 3 concertos while Sieber's Op.3 is the Caprices
