Music scale
FIG. 1 is a top perspective view of a music scale showing my new design; and 
     FIG. 2 is a perspective view thereof taken at 180° _rotation from the above perspective view. 
     The broken line showings are for illustrative purposes only. 
     The bottom is a featureless plane. 
     The design is characterized by an arcuate array with a plurality of circumferentially spaced recessed windows radiating from a central control element.