The concert MicroBlues focuses on improvised music in meantone tuning, 31-tone tuning, and 41-tone tuning. Guus Janssen and Melle Weijters explore together the new possibilities these tunings offer for improvised music, with a special emphasis on the blues. As a regular performer on the Fokker organ, the versatile musician and leading composer Guus Janssen already has extensive experience with “light music” on this 31-tone organ. Jazz guitarist Melle Weijters has devoted himself for many years to fretless and microtonal guitars and is a specialist in this field. The alternating styles of the improvisations and themes are supported by the use of the most advanced computer techniques, which will lead to surprising results.