(Image from "Decoding the Neuroscience of Consciousness" in Nature Magazine -https://www.nature.com/articles/d41586-019-02207-1)
Notice modern Science echoes that the whole of existence is a reverberration of energy. Another way to say this is that energy oscillates between physical existence and unseen vibration. So the Source of all that is physical is vibration or light energy. Yogic sciences recognized this eons ago. The original context of yoga was spiritual development practices to train the body-mind to self observe and become aware of true divine nature. The purposes of yoga were to cultivate discernment, awareness, self-regulation and higher consciousness in the individual. It dawns where vibration exists, sound typically exists. In human terms, sounds are experienced as vibration. Only a small band of frequencies is typically accessible to the human ear (sonic sound) athough the universe emits a wider range of vibrations. Those sounds above the sonic range are "supersonic". Vibrations below are "subsonic." The wider range of frequencies are only available to those who take the steps to expand consciousness. Those humans in a certain state of consciousness may hear sounds beyond 'normal range' of the spectrum. Other familiar senses may also sharpen as one shifts to tune into subtle senses. Such inner shifts only occur as we shift towards that which nourishes growth within and outside of self. Without this, a person may feel frustrated. Thus, we are inspired to be more fearless and grow in new directions. In essence, everything we think and do is a tool for aligning with harmony or well-being. Listening to certain tones or elevated frequencies of music facilitates natural human evolution into expanded consciousness. Recognize and let go of all that is disharmonious to True Being