Der Freischütz
Besides "Der Freischütz", he wrote the play "Das Nachtlager von Granada" (1818), which later became the model for Karl Johann Braun von Braunthal's libretto for Conradin Kreutzer's opera "Das Nachtlager in Granada" (1833). He also wrote "Der Holzdieb" (set to music by Heinrich Marschner).