By picking up vibrations in the spring and sending them back into the spring it will find a balance at which it will resonate. The resonations can be altered by modifying the electrical signal during the amplification stage, pushing or even hitting the spring. The instrument act as a sort of perpetuum mobile from which a strong soundscape arises which not only shakes the spring but also the surrounding room.
The photos are taken by Lars Lensink at a performance held at ACU, Utrecht.