Scroll up/down 10 times to enable DJ record scratch 'EraEra' noise! Spacebar for airhorn. Resets after 1 second of inactivity.Scroll back and forth 10 times on your trackpad/mouse wheel to enable the DJ record scratch 'EraEra' noise. Hold shift for constant 'down' scratch. Press space for airhorn. Stop scrolling for 1 second to return to normal scrolling.