@tonehealing For Longer Version - • 40 Hz | Pure Tone | Memory Recall | Remove... The lowest solfeggio frequency 40 Hz is the feel good frequency has also proven to have a healing influence on a number of human conditions. Listening to the frequency 40 Hz whilst meditation is said to have a vibrating pain-relieving effect and is considered a natural anti inflammatory & pain reliever, whilst helping to heal memory connections.