Bas Wiegers will conduct Georg Friedrich Haas' opera Koma with Klangforum Wien at the Salzburg Festival's Ouverture Spirituelle on 24 July.

In 2016, Georg Friedrich Haas' opera based on a libretto by Händl Klaus was premiered at the Schwetzingen SWR Festival in a first version conducted by Jonathan Stockhammer; Bas Wiegers conducted the world premiere of the new and definitive version at the Stadttheater Klagenfurt in 2019.

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