this is a recording..sort of

[Bob Gonsalves]

>     Soon after I found a cheap radio shack dynamic
>microphone,which I removed from about 90% of it's
>casing.I brought home two large panels of stainless
>steel(the sides of a discarded baking oven).The mic
>was just magnetic enough to stick to the bottom of
>the suspended plate without interfering with the
>diaphragm.I split the input to my stereo amp to the
>first feedback circuit,and borrowed another delay
>to feed the mic signal through.All day I would stand
> on my bed in this small room moving/rolling various
> textured objects on the steel surface,mixing be-
>tween this and the open mic oscillations.

Whee...
Another thing I have heard of people doing is putting mice on these 
types of plate reverbs...

-Bob Gonsalves http://www.pinknoiz.com/