One key consideration when approaching the piano works of Beethoven is that the origins of each of the compositions were in lengthy improvisations. Beethoven was reported to have dazzled and amazed the aristocracy of the time with his seemingly endless facility for invention. Beethoven had the extraordinary ability to evoke emotions in his audience as he improvised, blending virtuosity with great feeling. From these improvisations, Beethoven would develop his sonatas, concertos and symphonies.