![Das kalte Herz](http://www.ludwigmueller.net/wp-content/uploads/2022/11/8625_sth2_daskalteherz_web_neu-1-1024x683.jpg)
- after the fairytale “Heart of Stone” by Wilhelm Hauff about Peter Munk, a charcoal maker who sells his heart to a ghost in the Black Forest
- premiere: November 25 2022, Deutsches Nationaltheater Weimar
- director: Swaantje Lena Kleff
- sound design and music: Ludwig Peter Müller