I never even imagined.

If I owned that camera I'd be filming everything just to see where I could capture these types of effects.

*quality

Boosting this quality contribution up in the Hot Listing - declared quality by EndAll.

I've never done this, but I have to call bullshit. The strings should be moving near the fundamental with a node at the players fingers and one at the bridge (if that's what it's called), the amplitude is way too high, and the strings are moving in the wrong direction. The only explanation I could think of is that it's some kind of phasing trick with the camera shutter like the lines moving down a CRT monitor, but I doubt that could explain what we're seeing.

More like this:
http://www.youtube.com/watch?v=tZpeAJdD770

and that's probably exactly what it is
the camera scans the image from top down, so there is a slight lag for every vertical pixel row
the strings couldn't possibly stretch and wobble around like they appear in the video
not bullshit, but merely misinterpreted
still damn cool though
would make a great music video to do this for all the instruments and just zoom around in there

crotchflame, what you're seeing is the interference between the string and the shutter. The same reason you get jelly like movements when panning with a digital camcorder is the reason you're seeing the strings moving like this. The strings aren't actually forming the shapes you see in the same way as a building doesn't actually distort when a camcorder pans.

Even so, it's a very very cool effect and I really enjoyed watching it!

That's the only plausible explanation, but the magnitude of the effect still seems large to me. A pleasant surprise I guess, and I agree that it's a very cool effect.

The lights in the background were flickering, it was simply a fast shutter speed. If I set my XL1S to full manual and a shutter speed of 1/1000th of a second I see the same effects with other stuff (spinning fans, flourescent/hid lights).

(Sports mode on other video camreas will have the same effect of attempting to force a high shutter speed)

standup bass guitar? = up right bass/ double bass/ contra bass/ acoustic bass.
Not a bass guitar at all really