Bodily Healing: The 396 Hz frequency is thought to promote physical healing, making it a great tool for those recovering from illness or harm. The A4 at 440 Hz is highlighted over the chart. For more geeking out, you might be interested in this interactive comparison of equal temperament https://frequency-band-from-30-to45431.digitollblog.com/32117981/examine-this-report-on-solfeggio-frequency-396-hz