444Hz + 888Hz : Powerful Angelic Frequencies combo and Their Benefits

444Hz: Holy Frequency

John Lennon Tuned His Guitar at A=444 Hz (C=528Hz) Should We Too?

“Countries, and even cities, each set their own criterion, with the result that tuning varied widely from one locale to another”: How 440Hz became the “concert pitch” – and the argument to change it to 432Hz