Classical. The most familiar of Mozart's piano sonatas, the Sonata in C, K. 545 is sometimes referred to as the Sonata Semplice or Sonata Facile because of its elegance and simplicity of charm. The internationally renowned piccoloist Nicola Mazzanti, author of The Mazzanti Method (414-41212, $24.99), has transcribed the famous Mozart sonata to serve as a sonata for piccolo and flute. Suitable for recitals, Mazzanti's Mozart is equally ripe for studies in 18th-century performance practice as applied to the piccolo. -the publisher