The LA, tuned in 440hz or 432hz? It's a very fashionable controversy, and in our own opinion, it depends on everyone's desires and listening, so ask yourself these two questions:
-Which of these two frequencies do I prefer to listen to and play?
-And also, will I want to play music, with other instruments that are not tunable?
In Europe instruments are usually tuned to 440hz, if you want to play in a group the other instruments must be tuned to the same frequency. If your Tongue drum is tuned to 432hz you will not be able to play with a flautist who is tuned to 440hz, because this is not tunable. A guitar, for example, could be tuned to 432hz or 440hz.
Many claim that 432hz is a beneficial frequency for the body and mind. All the music therapists, or people who provide care using sound vibrations that I have had the opportunity to meet are unanimous: 432hz is much better than 440hz.
Here we do not wish to take sides, the choice must come from you, whether by conviction, interest, or simply by feeling.
Do your research, the web is full of opinions and studies on this subject. I suggest you view the very complete article taken from the site slate.fr, which it seems to me deals with the subject of rumors and "what is said" in a very objective manner: https://www.slate.fr/frequences-musique
Be fair to yourself! In our opinion, the best choice you can make is by listening to your feelings! Here's a little comparison video, just listen and feel :)