Intonarumori - 1913 (The beauty of noise)

There is no beauty in noise. And so what's the point of make it. Noise is, by vocabulary definition, the auditory experience of sound that lacks musical quality. I have got another one which is more practical: an electric disturbance in a communications system that interferes with or prevents reception of a signal or of information, as the buzz on a telephone or snow on a television screen.
And so noise is somehow the end of the communication, the end of the words and the beginning of a different sort of “communication”. In the image above, Luigi Russolo is playing his noisy machine called "intona rumori" literally noise intoners. Luigi Russolo can be defined as a precursor of the electronic music.

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.

Prepared Piano by John Cage

Prepared piano is a special piano that John Cage modified in order to produce a different piano sound. The idea was to interfere with the normal vibration of the strings of the piano putting screws and object on the strings.