-
Octaves of notes lie on vertical
lines.
-
Successive notes separated by
perfect fifths (3/2) lie on diagonal lines sloping downwards to the
right.
-
Successive notes separated by
intervals of a perfect fourth (4/3) lie on diagonals sloping downwards to the left.
-
Successive notes lying on the
same horizontal line are separated by the Pythagorean tone interval of 9/8.
