Sonata 7 in D major opens with a sunny Andante that nevertheless has a poignant moment just before the end. The technically challenging Allegro moderato that follows bounces along airily, throwing out scales, arpeggios and wide leaps with equal abandon. The concluding Allegro is a feast of syncopation: an object lesson in how to compose a coherent movement based on a single idea that never comes close to sounding tedious. Sonata 8, in the same key, is the only work in the set to arrange its thre...