The Photophonic Experiment by Pram, Project Dark and Bliss Body at the MAC in Birmingham was an audio-visual spectacular.
http://www.artscouncil.org.uk/aboutus/project_detail.php?sid=1&id=439&page=8
The three groups had custom built musical instruments that created sound by light or electricity. The artists would point lights at screens and there would be a resulting noise (photo-synth). Another machine would spark and the sound would be amplified in differing lengths of tubes to create different pitches (spark-o-phone). There was a theramin player too. This instrument suited the noisy nature of the experiments as it has a complete range (glissando) of frequencies unlike a keyboard that is restricted to a tonal scale. The overall balance of the evening’s music was half noise and half music. This worked very well. It never strayed too long into abstract noise before a ‘musical’ element brought cohesion to the audio chaos. I have been thinking a lot about the difference between noise and music and I think the difference is structure and organisation. A 10k test tone in a studio is 'noise' whereas when it is combined with other instruments and played on varispeed in John Cage's Imaginary Landscape No.1 it is 'music'. Only in my opinion of course, these things are rather subjective.