Laboratory – open, close the freezer: Listen & Download Close the freezer, Laboratory – open .mp3 Error! Change your browser, please! ⇓ Download Sine wave (975Hz) ⚠ Throw nutshells on the floor ⚠ Tambourine ⚠ Small crank rotation ⚠ Item falls on concrete ⚠ Closing the umbrella, Opening ⚠ Electronic bird singing ⚠ The robot moves, makes sounds ⚠ Tinder duster surface ⚠ Take a towel from the heated towel rail ⚠ The noise of the great hall ⚠ Board falls ⚠ ★★★★★