Diminished chords are a nightmare. What the fuck is a bb7? Just say you mean 6.
Diminished chord = 1 b3 and b5, right? So far so easy.
Dim7 = 1 b3 b5 and bb7.
Sooooo... 1 b3 b5 and 6.
I want to learn chord substitutions btw, that's why I'm reading this stuff in the first place.
Nobody:
Jazz guitarists: as you know you can substitute an E7b9 for E, and then you can substitute Bdim7, Ddim7, Fdim7 or G#dim7 for that.
Me:
