Zeit Lupe (2019) (with mikroPULS) by Gebhard Ullmann (playlist) published on 2019-11-05T07:52:54Z mikroPULS is the first quarter-tone piano quartet worldwide. Gebhard Ullmann (ts) (Berlin) Hans Lüdemann (p and virtual p) (Cologne) Oliver Potratz (b) Eric Schaefer (dr) Genre Jazz & Blues