Excellent. Interesting. Unexpected stories and research about how our ears ( the ability to hear) affects our body's ability to grow even from initial divisions of cells. How certain " sound frequencies" help " charge the brain" and stimulate it and the body in harmonious positive ways and how trauma affects sound production and also our ability to hear certain frequencies, resulting in poor health or loss of function of such things as ability to sing on pitch.. and how function can be restored through consciously working with certain frequencies of sound.