In the Cosmic Octave family, 126.22 Hz is the pitch most often placed at the solar plexus, the body's centre of will and warmth. It belongs to Hans Cousto's method of raising an astronomical cycle, octave by octave, into audible sound. Bright and steady, it is used in practice as a tone for confidence and centred energy. Nothing is prescribed; it is simply where this pitch tends to be seated on the chakra ladder. Hans Cousto's Cosmic Octave takes the measured period of an orbit or a day and doubles it upward, octave after octave, until it becomes an audible pitch. Several of those tones (the Earth year, the Earth day, Mercury, Venus) have long been paired with individual energy centres by practitioners who tune bowls and forks to them. This system gathers that pairing: each chakra given the planetary tone most often assigned to it. Independent of any tradition, controlled clinical evidence that a specific frequency produces a specific health effect is limited and mixed. Auriviel presents these tunings as music and contemplative practice. This page is for general information and relaxation. Auriviel's frequency music is not medical advice, diagnosis, or treatment, and no health outcome is claimed. If you have a medical concern, please consult a qualified professional.