440 or 432
Should we all be tuning to 432hz?
http://www.whydontyoutrythis.com/2013/08/440hz-music-conspiracy-to-detune-good-vibrations-from-natural-432hz.html?m=1
http://www.whydontyoutrythis.com/2013/08/440hz-music-conspiracy-to-detune-good-vibrations-from-natural-432hz.html?m=1