Circuit Bending Performance

What is circuit bending?
Definition from wikipedia:
"Circuit bending is the creative short-circuiting of devices such as low voltage, battery-powered guitar effects, children's toys and small synthesizers to create new musical instruments and sound generators. Emphasizing spontaneity and randomness, the techniques of circuit bending have been commonly associated with noise music, though many more conventional contemporary musicians and musical groups have been known to experiment with "bent" instruments".

In this circuit bending performance the performers are randomly welding components in order to generate unexpected noises, becoming also a visual experience.