About a year ago, and friend of mine and I went in Paris streets at night to
record various "city sounds". We hit semaphores, letter boxes, glass bins,
brushed window grills, etc... Then we made two little sequences out of these
sounds using Jackbeat (see Night Bells): http://jackbeat.samalyse.org/wiki/MusicExamples
You can download the jab files and extract samples if you want to. Jabs are tar
archives.