There are, at least, three bands named Katzenjammer: 1. A folk group from Oslo, Norway 2. A British piano musical comedy duo 3. The original name of Kyuss 1) A folk group from Oslo, Norway. Mixing a variety of musical styles with multi-instrumentalism, the band consists of Anne Marit Bergheim, Solveig Heilo, Marianne Sveen and Turid Jørgensen. Most of their material is written by their friend Mats Rybø; however, the band also contribute songs written by themselves.