Thematic dualism

As a thematic dualism is called in music, two topics that are often contradictory and compete (for example, in the Sonata ).

Thematic dualism developed in the Viennese Classic and had its climax there. The two topics often represent more abstract ideas that both want to be right. In the course of a sonata it becomes clear which of the two themes / ideas is the right one (in the composer's opinion), but they can also be rated as equally strong.