Hemi-Sync Metamusic 【GAIA】 What is Hemi-Sync? Hemi-Sync is an audio technology developed by the Monroe Institute in the United States. It uses different frequencies played in each ear to adjust brainwaves, thereby guiding the state of consciousness. It can lead to various states of consciousness, such as meditation, concentration, and relaxation. Individual results may vary. Please comment if you wish to purchase this CD with other CDs. A small discount is possible. Discounts are available. 2 CDs for ¥3,500 3 CDs for ¥4,000 4 CDs for ¥4,500