The YM-6100 is a 5-octave; height-adjustable rosewood marimba designed in conjunction with world-renowned marimba legend Keiko Abe. The YM-6100 is the culmination of over 40 years of instrument development with Ms. Abe and is the industry-leading flagship for all Yamaha marimbas. Features include 5 Octave range with Graduated Rosewood Bars, Height-Adjustable Frame, Forward Facing Tunable Resonators and Strengthened Cord. Comes complete with cover.