In January 2023, Christoph Sietzen toured with the Symfonieorkest Vlaanderen and its conductor Risto Joost in Belgium. With „Frozen in Time“ they performed some outstanding concerts in Brügge, Deinze, Gent, Heist-Op-Den-Berg and Antwerpen.

This tour was supported by the Austrian federal Ministry for Arts, Culture, Public Service and Sports.