Each part in this double album presents one work of 33 variations by Franz Hummel. Initially, Hummel felt challenged by Beethoven's Diabelli Variations to compose another 33 variations on the same theme. At a memorial concert following Hummel's death (August 20 th 2022), his three master students Yojo Christen, Christoph Preiss and Alexander Maria Wagner performed and reinterpreted these variations so powerfully that the desire arose to record this experience for album. The second album features the Hercher Variations, which Franz Hummel composed between 2017 and 2019, interpreted by Christoph Preiss. A special feature is that, apart from these two works by Hummel, there are only a few cycles with 30 or more variations in well-known piano literature, e.g. Beethoven's Diabelli Variations and J.S. Bach's Goldberg Variations.