The Bayreuth Festival has announced a cast change for two productions.

The company said that due to health reasons Dmitry Belosselskiy has canceled his participation in the festival. As a result, Mika Kares will take over the role of Hagen in the “Götterdämmerung” and Günther Groissböck in the role of Landgrave Hermann in the “Tannhäuser.”

Kares will make his debut with the company while Groissböck returns to the role of his debut back in 2011. The Austrian bass has appeared with the festival in such productions as “Die Meistersinger von Nürnberg,” “Siegfried,” “Die Walküre,” “Das Rheingold,” and “Parsifal.”

Kares joins a cast that includes Stephen Gould, Michael Kupfer-Radecky, Olafur Sigurdarson, Catherine Foster, Emily Magee, and Christa Mayer. Meanwhile, Groissböck joins a cast that includes Stephen Gould, Markus Eiche, Elisabeth Teige, and Ekaterina Gubanova.