Daisy Chaining

maj 7 / Ionian

+ b7 = 7 / Mixolydian

+ b3 = delta 7/min7

+ b5 = null set/min7 b5/half-dim

+ b7 = dim

The problem is I always have to relate everything in the tree back to the dominant 7th in my mind.

Bonus points if you got the null set joke.