Oxygen balloon: Listen & Download Oxygen balloon .mp3 Error! Change your browser, please! ⇓ Download Small compressor blowing air ⚠ A stream of air breaks out of a metal pipe ⚠ Air is let through the regulator ⚠ Balloon inflating ⚠ Air flow ⚠ Mask breathing ⚠ Rope torsion ⚠ Truck Air Brakes ⚠ Air release with a loud whistling creak, ⚠ Soccer ball ⚠ Air compressor, cylinder pressure, air bleed ⚠ Helium balloon ⚠ ★★★★★