Unidentified Sound Object made a great post on how ambient noises can be turned into music:
audioscan is an artistic project conceived by Giorgio Sancristoforo, produced by AGON in collaboration with basemental. The project consists of a multimedia interactive installation and of a live performance combining music and video. Both are based on the sound mapping of Milan. At the basis of audioscan there are 1.580 recordings and phonometric surveys gathered within the perimeter contained in the main ring road of Milan.
Hear the result below – and check out the full post on audioscan here.