Jacobin chords

Jacobin chords are essentially tempered dyadic chords tempered by the jacobin comma, 6656/6655.

There are seven chords in total involving this comma. The notation assumes each interval is the interval from the chord and not from the tonic. There are 5 triads:

• 1/1 - 55/52 - 11/8 - 11/8
• 1/1 - 64/55 - 13/11 - 16/11
• 1/1 - 13/10 - 16/11 - 128/121
• 1/1 - 13/11 - 8/5 - 128/121
• 1/1 - 5/4 - 11/8 - 121/104

And 2 tetrads which both span two octaves:

• 20/13 - 11/8 - 11/8 - 11/8 across 4/1
• 13/11 - 8/5 - 16/11 - 16/11 across 4/1