Taking the advantage of two great historical instruments [the Giacomo Bazzani e Figli, 1832, organ of San Lorenzo in Cavazzana (RO) church, and the Gaetano Callido 1797, organ of the Beata Vergine del Rosario in Polesella (RO) church], in this double album organist Alessandro Perin offers a significant collection of the works by the Paduan composer Gaetano Valeri, a leading exponent of the late eighteenth century Italian keyboard music scene. Remaining anchored to the 'galante' style, Valeri's sonatas are characterized by great inventiveness, singability, rhythmic variety and formal elegance, and naturally enhance the variegated tonal characteristics of the Italian seventeenth-century organs. With the participation of maestro Roberto Loreggian, to be noted the world premiere recording of the two four-hands works taking to the limit the expressive and technical features of the instrument.