>"So a 432 Hz retune might be just the thing to mellow out to. Likewise, a 448 Hz retune might be just the kick in the ass I need in the morning to get going. S

>"So a 432 Hz retune might be just the thing to mellow out to. Likewise, a 448 Hz retune might be just the kick in the ass I need in the morning to get going. So retune all you like." I have no idea why my speculations here* seem to be controversial (as judging by the votes), but have you considered that the preferred fundamental pitch actually varies with season, latitude, and time of year? That would explain why no one has settled on a specific pitch for all circumstances. It is ultimately controlled by the length of day. Perhaps time of day as well, if we split the day into sun up and sun down. *https://news.ycombinator.com/item?id=12781437 https://news.ycombinator.com/item?id=12781437