When sounded individually or with each other, these tuning forks create powerful frequencies for health and balance. When sounded around the body, many people report profound healing and prayerful meditation experiences. Holy Harmony Tuning Forks, these tuning forks are unlike any scales or sounds found on the earth. Each set comes in a beautiful protective velvet pouch for storage and travel. A detailed 20 page instruction manual is included with the 9 tuning forks.