Works by Frank Wedekind: The Awakening of Spring. Pandora's Box. Such is Life.

Benjamin Franklin Wedekind, usually known as Frank Wedekind, was a German playwright. His work, which often criticizes bourgeois attitudes (particularly towards sex), is considered to anticipate expressionism, and he was a major influence on the development of epic theatre.
The Awakening of Spring: A Tragedy of Childhood.
Pandora's Box: A Tragedy in Three Acts.
Such is Life: A Play in Five Acts