Constructed to the same exacting standards as the Bergerault manufactured professional vibraphones and marimbas, the PXSCH On wheels Bass Chromatic Xylophone  permit the pre-teen student to enjoy the thrill of performing on authentic professional-type instruments. Here is the logical progression of the Orff Instrumentarium. The wide Rosewood bars, perfectly balanced and harmonized to eliminate dissonance, provide a great and powerful sonority