Yesterday, I was in a position of looking down on a very large distribution warehouse and there was a bunch of lads firing stones from there gallys (catapults) at the roof and they made this remarkable sound as they hit the roof. Alas we couldn’t pick it up with the recorder on my mates phone. If only we could have recorded one sample, I could have automapped it over a whole zone – I don’t know the technical term, but it’s relatively easy in the video I’ve seen.
EDIT: It looks like I’ve posted in the wrong place but I can’t seem to delete it or move it. Well that’s Pianobook I suppose.