6. The pentadecaphonic guitar

A preliminary study on a pentadecaphonic guitar has been done.

Here it is shown the comparison between the dodecaphonic and the pentadecaphonic  fingerboards:

Here it is shown a possible tuning:

and, consequently, some positions:

     Play Fp Major               Play Fp minor                           Play Ap Major                               Play Ap minor

and some others:

The positions seem  just a little more complicate than the dodecaphonic ones.

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