Just as Walfgang Amadeus Mozart had shown in the Piano Fantasies and Sonatas, beginning with K. 310 in A minor, Ludwig van Beethoven also conceived the composition for the same instrument as if it were intended for the orchestra. Neither Franz Joseph Haydn nor later Franz Schubert had garnered the same sensibility. The thought of polyphonic composition refers to the maximum expressiveness and colors that only the orchestra can give, but which the piano can represent well. Mozart had thrown his heart over the hurdle because the piano of his time did not yet have sufficient technical qualities, whereas in Beethoven’s time things changed dramatically.