I think the one that really “did it” for me was Ramana Maharshi.

His direct approach and Atma Vichara (self inquiry) facilitated the experience of my True Self.

Feelings are so subjective that words / descriptions kind of distort the original visceral feeling.

I should add that while I’m not specifically a “Jazz Musician”, I play piano , and utilise substitutions, extensions etc. :)

Its the same kind if vibe as when you hang out with certain Jazz musicians / fans and they start discussing chord substitutions, extensions, etc.