After sixteen award-winning CDs, five books, and more than a thousand radio interviews, Jill Mattson still gets asked the same question: what actually makes "healing music" heal?
It's a fair question, and an increasingly necessary one, because people use this topic loosely these days. A track with a Solfeggio tone layered under a synth pad is not the same as an engineered composition, frequency by frequency, to work with the body. Mattson pulls back the curtain on her own process, because the difference lies almost entirely in the details.
Precision Before Anything Else
Most frequency-based music today is built on a computer sound card using an online tone generator — convenient, but never designed for precision. The body, however, is not casual about frequency; it responds to exact vibration. Mattson embeds precise frequencies in her music, using external frequency generators and specialized speakers that can reproduce tones beyond the range of normal hearing.
She also draws on a thousand-year-old Chinese method of tuning an instrument to one’s listener's heart after meditating on balancing energies for our universe.
She intentionally lets different instruments in the same piece—a cello, a violin—settle on slightly different tuning centers, echoing how frequency behaves in the natural world.
Nature is never perfectly uniform, and healing music built on nature's own irregular templates does more for the body than a piece tuned to the uniform, “perfect” pitches of the equal-temperament scale.
Harmonics, Direction, and the Architecture of Sound
Harmonics are the pattern of subtones layered within what sounds like a single tone. Ancient sages, well aware of them, treated harmonics as a subtle energetic backbone of reality — something like energetic escalators, carrying flow and movement beneath what we consciously see or hear. Sharry Edwards, the pioneer of BioAcoustics, has found that many bodily processes display this same harmonic pattern when reduced to tone. Harmonics are prevalent in our bodies. Harmonic structures appear at both the micro and macro levels—even in planetary placements. Most people today have never learned what harmonics are, and digital music never represents them accurately — embedding them properly into a recording takes specialized software. Much of the real healing work happens there, but it's only one part of the architecture.
Mattson also thinks carefully about the direction sound travels — how a frequency panned to the left ear interacts with one in the right ear. The brain subtracts the two low-frequency signals, so an instrument's placement during recording, mixing, and mastering isn't cosmetic. The brain changes how frequencies travel in the body and reach the listener's nervous system.
Key signature matters for the same reason: each key carries its own frequency range and pattern, shaping mood and physiological response, so it's one of the first real decisions in composing a piece. Tone charts published by Sharry Edwards link each musical tone to identical frequencies found in the physical body so a song can amplify certain emotions—and certain physical structures—in a kind of vibrational massage. How a song affects the body isn't random; it's just inaudible to a casual listener, and it's exactly what separates a composition engineered for healing from one that simply sounds pleasant.