This is awesome
"*Note this effect is due to the
rolling shutter, which is non-representative of how strings actually vibrate.
Tips:
• You must have the strings brightly backlit to get the camera to capture at such a high frame rate (pure conjecture). You can see how the effect fades when the buildings come into view.
• Use a pencil
*This was used with the front facing camera, try the back camera, it may capture better!"
anwyay, fucking awesome.