For many years Frank Gratkowski has been a familiar face at the Bimhuis, as the sax and clarinet player for BikBentBraam and the trio with Wilbert de Joode and Achim Kaufmann. In his improvisations he brings together jazz and contemporary classical music, focusing on sound and microtonality. In his current quartet he plays with rising stars from Cologne, where he teaches at the conservatory. The youngest member, drummer Dominik Mahnig, has previously performed with named performers such as Simon Nabatov and Mark Dresser.