A violent marriage of nature and industry, the crazy contraption in Twittering Machine (1922) mechanizes the songs of birds. 

Salome - Veil Dance (1920) 

Salome (French: Salomé) is a one-act tragedy by Oscar Wilde and one-act opera by Richard Strauss. The play depicts the attempted seduction of John the Baptist by Salome, stepdaughter of Herod Antipas; her dance of the seven veils; the execution of John the Baptist at Salome's instigation; and her execution by Herod’s guards

Final Scene of a Tragicomedy (1923) is a satirical parody depicting a single tragic/comedic scene. Klee’s drawing portrays four surreal stick figures all gathered on a stage around a ladder that fades into the distance behind them.