Experimental musician Diego Stocco passes in front of a dry-cleaning establishment almost every day. The sounds that came from the machinery there fascinated him, so he got permission from the owner to turn those sounds into a song. There are more details in his making-of post. http://www.behance.net/gallery/Music-from-a-Dry-Cleaner/2161629
Previously: Music from Sand and Bassoforte.