Noise Blog!

Hi,
Just checked out the following blog, found under the window:scene category (tag) 'noise'. Having just come from a very ...interesting... sound experience in Drawing, I felt it was pretty relevant.

http://window.org.nz/search/label/noise

Powersound at Te Tuhi...Sound art? or Music? The objects of sound used at this gig are referred to as instruments. Made of a 'bridge of wires at various tensions, with pickups for amplification' sure sounds like a description of a familiar instrument...but what did it SOUND like?
Sound as an artform : well there is the generally appreciated category music - with melody, harmony, rhythm and perhaps lyrics, and then there is 'sound-art'... A realm which I have, before today, never actually given more than a cursory glance (whats the audio-version of 'glance'??) (and perhaps a raised eyebrow at what sounded just weird).
But now i am curious -at what point are the two delineated? What is 'music' and what is simply 'sound' (or 'noise')?
Enlighten me...