161 Rotation Plate “161 Rotation Plate” has been added to your cart. View Cart Look inside Details Add To Cart Preview Buy (A$2.90) 161 Rotation Plate The Rotation Plate for Altered Scale 161 as found in our eBooks. The COMK Cycle of Movable Keys for music improvisation and composition. 1 pages Post navigationPrevious post: 160 Rotation PlateNext post: 162 Rotation Plate