in response to your comment about heavy metal music being "born" when Jimmy Page plays his guitar with a violin bow, I have two comments. First, the name "heavy metal" was coined by the band Steppenwolf. In "Born to be Wild" the line "heavy metal thunder" was picked up by some rock journalists and radio hosts and the term began being applied to the distorted guitar sound that was being popularized by similar sounding bands (Led Zeppelin, Deep Purple, etc. ...)
second, I HAVE to mention the scene from This Is Spinal Tap when lead guitarist "Nigel Tuffnel" is shown playing his solo using the whole violin (not just the bow!), the best part is when he retunes the violin!!! funny stuff...
enjoy