Do you really know how the instrument looks for his Bach Suites for Violoncello wrote? Sigiswald Kuijken is in his research that it may not be dealing with the now well-known (held between the legs) cello, but a violoncello da spalla (shoulder-cello). A convincing argument for Kuijken thesis is certainly this recording on a custom-made product for Kuijken instrument that knows these works represent more than just convincing.