Basshaus Verlag Folterkammer Bass
Basshaus Verlag Folterkammer Bass, Method for Electric Bass, 140 Finger exercises for electric bass, By Thomas Dirr, 2nd extended and completely revised edition, Coordination exercises, exercises for the plucking hand, arpeggio exercises and more, In standard notation and tablature, ISBN 9783981035629, Format: DIN A4, Spiral binding, 90 Pages, In German language, Supplementary videos on the YouTube channel