Escalator: Listen & Download Escalator .mp3 Error! Change your browser, please! ⇓ Download Explosion, Energy distortion ⚠ High-frequency squeak, hum ⚠ Stir the liquid in a beaker, Chemistry ⚠ Metronome ⚠ Beep time ⚠ Air dissection ⚠ Board falls ⚠ Plastic bag ⚠ Rustling leaves, Fussing in the thicket ⚠ Beads and balls crumble ⚠ Bone breaking ⚠ Small crank rotation ⚠ ★★★★★