Appassionata Sonata

We learn from others, or as Picasso said, "Good artists copy, great artists steal." Beethoven took this advice and borrowed from Mozart and Haydn, but quickly progressed.

Where some would borrow a sonata development or structure, Beethoven would take the layout, hacksaw it off and replace it with an invention of his own, or invert something and swap parts around, much like car nuts did in the early days of Hot Rod building.

But the composer's days of modifying others' ideas was over.