What's the difference between 440 hz music and 432 hz music?

440 Hz is the standard, the slight difference with 432 HZ frequency reference is that some claim it sounds a bit more natural, at peace with nature. Often native flute players utilize 432 HZ tuned flutes. Musicians such as myself use it occasionally with guitar especially if mixed with nature sounds, but the risk involved is that it may sound out of tune to some consumers.

Nothing you would likely notice.

One sounds happier

AST 3000 hz