050 Rotation Plate “050 Rotation Plate” has been added to your cart. View Cart Look inside Details Add To Cart Preview Buy (A$2.90) 050 Rotation Plate The Rotation Plate for Altered Scale 050 as found in our eBooks. The COMK Cycle of Movable Keys for music improvisation and composition. 1 pages Post navigationPrevious post: 049 Rotation PlateNext post: 051 Rotation Plate