In my composition studies at “lietuvos muzikos ir teatro akademija” in Vilnius I came across using 12 tone techniques from Schoenberg/Hauer in combination with the Bohlen-Pierce[ref name=”bp”]Bohlen-Pierce Site http://www.huygens-fokker.org/bpsite/[/ref] scale discovered independently by Heinz Bohlen in early 1970’s and John Pierce.

This scale is based on mainly odd frequency ratios and divides the duodezime (ratio 3:1) into 13 steps. You can listen to the equally tempered scale here:

If you want to know how to use non-standard tunings and scales in combination with your MIDI keyboard or favourite music notation software read on!
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