Opera-oratorium The Valley of Dry Bones [Údolí suchých kostí] had a world premiere on 18 April 2009 at the Reduta Theatre in Brno as a part of celebrations to mark the 30th anniversary of the establishment of Ars Brunensis chamber choir. The Prague premiere followed on 6 October 2009 in the framework of the Next Wave festival. It was a second performance of this work.
More information in the article:
J. Záhorková: Výtvarník a skladatel Franz na chatu..., iDnes.cz, 6.10.2009.