==healing Power of Cat purrs==
cats create purr vibrations within a range 20-140 Hz known to be medically therapeutic for many ilnesses
==Sound of Nature==
The sound of fire, water, earth and air provides an ideal setting for releasing trauma, sickness and pain. Also the voice can be used to heal in a natural setting. Reconnecting deeply with nature can create a 'sense of belonging' and 'coming home' and sound can readily enhance and enrich this process.
==References==
Simon Heather explores these four aspects of sound Resonance, Intervals, Harmonics and Chant in his book The Healing Power of Sound and in his Sound Healing courses.