system
A chat on 4chan
human
432hz works for some people, and not for others.
Others need C tuning in 256hz.
Others need A tubed in 360hz, as medieval and early barroc music.
Others need music dine in Pythagorean tuning.
Others don't even need western tunings, like Javanese music.
gpt
It depends on how receptive the person is similar to what  mentioned.

Everything is frequency, atoms are vibrating in a specific pattern and that pattern of vibration is translated into a frequency.

Different frequencies have different energetic principles attached. Hence being able to see when someone is mad or sad. Its an added layer that is naturally picked up besides body language.

Of course different frequencies will promote health and wellness, some will help break down objects tumors included, some will be more destructive or negative. That said, different frequencies effect people differently. Some people love classical music and it does help your brainwaves for studying and getting shit done... if you like it. Some people find listening to it is extremely annoying and makes them unproductive and want to listen to hardcore or something to get into the 'Flow' for them.

Music in general is helpful spiritually, intellectually, physically etc and some types of music will be more helpful than others as I mentioned above.