Noise Music

A category consisting of multiple discrete genres of music that have employed noise as a musical resource. It can feature acoustically or electronically generated noise, and both traditional and unconventional musical instruments. It may incorporate live machine sounds, non-musical vocal techniques, physically manipulated audio media, processed sound recordings, field recordings, computer generated noise, stochastic processes and other randomly produced electronic signals such as distortion, feedback, static, hiss and hum. There may also be emphasis on high volume levels and lengthy, continuous pieces. More generally noise music may contain aspects such as improvisation, extended technique, cacophony and indeterminacy, and in many instances conventional use of melody, harmony, rhythm and pulse is often dispensed with. The Futurist art movement was important for the development of the noise aesthetic, as was the Dada art movement and later the Surrealist and Fluxus art movements. Contemporary noise music is often associated with extreme volume and distortion.

Source: http://en.wikipedia.org/wiki/Noise_music