The power of music, then, probably comes not from specific frequencies, but from trance-inducing rhythms, or a combination of musical elements as they stand in relation to one another—elements including harmonic structure, melody, tonality (major or minor), rhythm, and tempo. In other words, whatever effect a piece of music or sequence of sounds has on you, it’s unlikely that it would stop having that effect if it were shifted by a few hertz (Hz, cycles per second) in one direction or the other.
