Electric Prepared Mandolin

I bought a cheap mandolin about 10 years ago for $80.  Then about 5 years ago a mic stand fell on it and cracked right under the bridge (thus it wont stay in tune).  I put it in a closet with intent of smashing it at a show one day.  Instead of destroying it, I put a in contact mic pick up, a 1/4" jack, and "prepared it" in the John Cage piano kinda way by putting paper clicks and wood in the strings.  I play above the neck and below the bridge a lot.  I then run it through my pedals to create odd sounds.  It sounds like the sample below, sometimes.

John Cage- The Future of Music – Credo

I BELIEVE THAT THE USE OF NOISE
Wherever we are, what we hear is mostly noise. When we ignore it, it disturbs us. When we listen to it, we find it fascinating. The sound of a truck at 50 m.p.h. Static between the stations. Rain. We want to capture and control these sounds, to use them, not as sound effeets, but as musical instruments. Every film studio has a library of »sound effects» recorded on film. With a film phonograph it is now possible to control the amplitude and frequeney of any one of these sounds and to give to it rhythms within or beyond the reach of anyone's imagination. Given four film phonographs, we can compose and perform a quartet for explosive motor, wind, heart beat, and landslide.

TO MAKE MUSIC