The C. Keller in its current form opened its doors after a lengthy renovation for the 1999 City of Culture year. The natural stone bar, which is based on the style of the bar in the vaulted cellar, with a matching DJ booth, the modern walls and pillars and the atmospheric lighting create a unique ambience, which forms the framework for the varied and high-quality musical program: from the Monday jazz concerts with young musicians from the national and international scene, to rock and pop bands and the stylistically changing DJ program.