The inner sounds of objects and substances picked up with contact mics or hydrophones never cease to amaze. For Inner Out, Italian sound designer and artist Nicola Giannini uses contact mics frozen in ice, and performs a concert on them by playing the ice. Using different objects and techniques, such as grinding, tapping, hitting the ice, or pouring hot water, he creates the source material which he processes with live electronics to create a surround concert.

(via Everyday Listening)