Piano Sonata No. 10 in G major, Op. 14/2
This work has an unusual structure in its three movements: Allegro, Andante, and Scherzo (Allegro assai). A Scherzo, of course, are usually an inner movement, but Beethoven was never one to follow convention. He makes the pattern work well here and the piece sounds perfectly logical even at first hearing. The sonata begins with an invigorating burst of fresh air-- springtime country air, in this case.