

(hummmmm) {low-frequency fuel ignition,
sustained
sub-bass drone, distant crackle,
engine warmth} (ahhhh)
{low-end propulsion roar, warm harmonic distortion,
distant starlight high-end sparkle} (oohhhh) {soaring high pad layer,
sub-harmonic
weight, thermal crackle panning wide} (hummmmm)
{engine cutoff, decaying long reverb tail,
cold space
silence, drifting sub-bass fade}