From two of Beethoven's lesser sonatas (Nos. 19-20) to one of his greatest - Sonata No. 21, Op. 53, known as Waldstein, after its dedicatee, Count von Waldstein, a close friend and early patron of Beethoven. It is very tempting to talk of watershed moments ?EUR" perhaps only visible to us in hindsight - but the Waldstein, its every note radiant with inspiration, is surely a landmark in Beethoven's development, as well as in the development of the sonata genre in Beethoven's hands.