013 Rotation Plate “013 Rotation Plate” has been added to your cart. View Cart Look inside Details Add To Cart Preview Buy (A$2.90) 013 Rotation Plate The Rotation Plate for Altered Scale 013 as found in our eBooks. The COMK Cycle of Movable Keys for music improvisation and composition. 1 pages Post navigationPrevious post: 012 Rotation PlateNext post: 014 Rotation Plate