There is a massive noise in your precious recording of 4'33" by John Cage in Carnegie Hall. Instead of four and a half minutes of silence -- electronic disaster in your headhones! Get rid of it by applying various filters to reach silence. Each slider controls one filter, which removes one element of noise when set to correct position.
LEFT, RIGHT: Choose the filter
UP, DOWN: Move the filter slider
You need sound output to play this minigame.
Warning: Squeaky noises ensue! :-)