In order to create an open voiced triad, take a closed voiced triad and raise the middle note an octave higher. In all fourths tuning, there are less shapes to remember. Here they are
Connect open triads
For major, minor and diminished open triads, the top note of one shape becomes the bottom note of the next one, one octave lower. Follow the cyan arrows when moving from one shape to another.
For augmented triads, it’s easier because we can use the same shape but move everything a major 3rd back and forth.
