Somewhat vaguely similar to my appreciation of art welded from junk, I am fascinated by the capture, tweaking, and collaging of raw sounds in order to make music. Beauty can come from lots of things- even discarded metal, or random noise waves propogating through the air.
That's why I've got lots of love for Unfoundsound! A netlabel out of Philly, they release quirky, dj friendly dance music that is made with (among other things) found sounds and field recordings from natural or unnatural environments. Besides releasing great music under creative commons licensing, they also have a series of field recordings which make for great fun in making your own music.