Oper Köln has canceled the Jan. 6, 2022 performance of Walter Braunfels’ rarely performed opera “Die Vögel” due to multiple cases of illness in the opera house.

The company did not specify the nature of the illness.

The opera was set to star Burkhard Fritz, Joshua Bloom, Samuel Youn, Wolfgang Stefan Schwaiger, Ana Durlovski, Anna Malesza-Kutny, Lotte Verstaen, Mine Yücel, Lisa Katarina Zimmermann, Constanze Rottler, Franka Wagner, Cordula Hack, Eva Budde, Artjom Korotkov, Andrew Penning, Michail Kapadoukakis, Heiko Köpke, Kevin Moreno, Christoph Westerkamp, Lucas Singer, Sung Jun Cho, and SeungJick Kim.

Gabriel Feltz was signed on to conduct a production by Nadja Loschky, with set design by Ulrich Leitner.

The seven-day incidence in Köln currently stands at 249.7. Germany has logged new 64, 340 COVID-19 cases on Jan. 5, 2022.