432 Hz for A note is a frequency very important for tuning instruments and music. If you try to listen to the sound of music, with this tuning will be more gentle and you seem to get better. The reason for this is that the frequencies produced are more natural with a tuning as A = 432 Hz or C = 256Hz. Unfortunately with the temperament you can not have both, you can do it only with the Pythagorean scale and natural tunings used in the past. About music tuned 432 Hz I wrote a book which of course I recommend you read: “Integral 432 Hz Music“. In this book I explain how to make beneficial music that is Art at 360 degrees.
For example, you can listen to “Pachelbel’s Canon in D” in the video below.