Christoph Sietzen nominated twice for Opus Klassik 2019 Juli 24, 2019September 1, 2019 von christoph Christoph Sietzen got nominated in two categories for the Opus Klassik 2019, in the newcomer category as well as in concert recordings. You can find more information here. Christoph Sietzen in zwei Kategorien für Opus Klassik 2019 nominiert The Wave Quartet in Grafenegg and on Radio