In the Solfeggio tradition 396 Hz is linked with letting go of fear and guilt. It's the tone we reach for when a day felt heavy. Try it while writing things down, then close the notebook.
traditionally linked with
how listeners use it
Frequency music is for relaxing, focusing and enjoying sound. The meanings above come from tradition and from how listeners describe it. They are not medical claims, and the music does not replace care from a doctor or therapist.