🎼 Why 432 specifically gets attention
This is where things get interesting for musicians like you:

432 Hz tuning has been romanticized as “more natural,” “cosmic,” or “mathematically pure” 4+3+2=9, 9 is magic in mathematics and music.

🌀 Why this makes 9 feel mystical
Even without the Tesla mythology, 9 has some genuinely strange properties:

Any number multiplied by 9 reduces back to 9

9
×
7
=
63
→
6
+
3
=
9

Any number added to 9 reduces to the same digital root as the original number

9 is the only digit that behaves like this

It’s the absorber and the eraser at the same time.

🎸 A musical parallel you might appreciate
It’s a bit like a drone note in music:

It’s always present

It colors everything

But it doesn’t change the harmonic identity of the chord you’re playing over it

It’s both part of the sound and outside the movement

That’s why people get drawn to 9 — it has that “always there, always not there” quality you just described.
Donny G

Donny G