122 Rotation Plate “122 Rotation Plate” has been added to your cart. View Cart Look inside Details Add To Cart Preview Buy (A$2.90) 122 Rotation Plate The Rotation Plate for Altered Scale 122 as found in our eBooks. The COMK Cycle of Movable Keys for music improvisation and composition. 1 pages Post navigationPrevious post: 121 Rotation PlateNext post: 123 Rotation Plate