The Musical Scale

Gurdjieff applied the octave of the musical scale to the Enneagram. He used a diagram similar to the one below:

In the Western musical scale, five of the notes have two half-steps, except mi and si, which have a single step only: do (C + C sharp), re (D + D sharp), mi (E), fa (F + F sharp), sol (G + G sharp), la (A + A sharp), si (B), and back to do (C + C sharp). E has a half-step because there is no E sharp, and B has a half-step because there is no B sharp. Gurdjieff stated th...