New audio piece: "Harmonic Protocol".
Stereo feedback loop 4secs long, with left and right blended with a rotation matrix
Inside the loop, compute RMS energy per semitone per channel via a bank of biquad bandpass filters (q = 17.310) from midi note 24 through 96, accumulated modulo 12.
Inside the loop, scale each individual semitone by the energy of the octave accumulation 7 semitones away (pick a direction).
Inside the loop, apply strong dynamic range compression to normalize level to ~1.