The fourth concerto for piano and orchestra is one of the mostly heartfelt compositions by Ludwig van Beethoven in this genre. It was created in 1805. Its themes, manner of account and virtuoso devices are really distinct. The slow movement attracts one's attention by the structure of dialogue extended between the soloist and the orchestra. Here the tendency to symphonization is revealed in the sphere of this genre. This tendency got its development through the future epochs' music. Even the compositions of the 20th century are stained with it.