Contact Mic & Plastic Cup

First test with a newly made contact microphone using a piezoelectric crystal. The sound is quite muffled because the mic was attached to the outside of the cup, which is plastic. I played around with different ways to excite the water in hopes of finding interesting sounds. Next time I want to try and submerge the mic into the water..

Audio signal straight to a Behringer UB-1622FX Pro mixer with no editing.