contact mic and a whoopie cushion:
contact mic whoopie.WAV
contact mic on the bus:
contact mic on bus.WAV
another contact mic on the bus:
contact mic on bus 2.WAV
contact mic and a whoopie cushion:
contact mic whoopie.WAV
contact mic on the bus:
contact mic on bus.WAV
another contact mic on the bus:
contact mic on bus 2.WAV
Amp circuit finds jesus in this chaotic world of electromagnetic signals:
Then piezo takes a trip inside a piano
piezo in the piano.aiffamp circuit finds jesus.aiff
Finally my heart jams out for the piezo
1007.aiff
I buit a microphone using a stethoscope because it is difficult to record body sounds with the contact mic.
http://ryanwurst.com/ryanwurst/stetho.zip
Here is a picture of the stetho-mic:

It uses two electret mic elements, which are extremely cheap (less than a dollar) and they sound great.
I hardly made it out of my kitchen, there were so many interesting sounds to be documented.
1. I put the mic in the toilet to record what the toilet hears.
2. I froze the mic in an ice cube and recorded the sounds of it melting in a bowl of water.
3. Placed the mic in the basin of my stainless steel sink and placed speakers on either side of the sink and waited for feedback/resonance.
I got these recordings despite having soldered poorly! I was holding everything like a crazy-man