Beethoven knew that, in addition to beauty and harmony, sound effects had a major impact on the creation and representation of environments. The Fourth Symphony is the expression of joy and spontaneity, through the absolute perfection of form. Berlioz characterized her as a "heavenly sweetness" and Robert Schumann as "a slender Greek maiden among the Nordic giants". Beethoven with its unique sonority transports us to an irresistible, breathtaking world of feelings and emotions.