The Solfeggio frequencies — 396, 417, 528, 639, 741, 852 Hz (and 963 Hz for Crown) — appear in ancient Gregorian chant and later sound healing traditions. Each is said to correspond to a chakra: 396 Hz for Root, 417 for Sacral, 528 for Solar Plexus, 639 for Heart, 741 for Throat, 852 for Third Eye, 963 for Crown.

Some traditions assign qualities to each: 396 for liberation from guilt, 528 as the "miracle" or "love" tone, and so on. Whether you take those claims literally or not, these frequencies form a coherent scale that fits the human voice. They offer a structured way to explore resonance from your belly to the top of your head.

Practising them can deepen body awareness, improve vocal control, and give you a simple framework for daily sound work. No belief system required — just curiosity and a willingness to feel.