040 Rotation Plate “040 Rotation Plate” has been added to your cart. View Cart Look inside Details Add To Cart Preview Buy (A$2.90) 040 Rotation Plate The Rotation Plate for Altered Scale 040 as found in our eBooks. The COMK Cycle of Movable Keys for music improvisation and composition. Post navigationPrevious post: 039 Rotation PlateNext post: 041 Rotation Plate