The third eye is a mystical concept referring to an invisible eye that provides perception beyond ordinary sight. It is located between, & just above, the eyebrows, & acts like a gate that leads to inner realms & higher consciousness. Its vibrational frequency is related to insight & intuition. Its associated color is indigo, & its element is light.
Solfeggio frequencies make up the ancient 6-tone scale thought to have been used in sacred music, including the beautiful and well known Gregorian Chants. The chants and their special tones were believed to impart spiritual blessings when sung in harmony.