Toss on your headphones, lay back, relax. Things might get a little weird. These sounds are thought provoking, abstract, and truly define one of the most unique forms of art – sound art.
I typically wouldn't do this, nor do I trust most of the stuff I read on here, but Wikipedia defined sound art way better than I could:
"Sound art is an artistic discipline in which sound is utilized as a medium. Like many genres of contemporary art, sound art is interdisciplinary in nature, or takes on hybrid forms. Sound art can engage with subjects such as acoustics, psychoacoustics, electronics, noise music, audio media, found or environmental sound, explorations of the human body, sculpture, film or video and an ever-expanding set of subjects that are part of the current discourse of contemporary art."