#1
So i've been wonder how to do this for awhile. For example Mushroomhead does this in one of their songs called Solitaire Unraveling. I've got a clip to show you want i want to learn to do.

http://www.youtube.com/watch?v=U45NfWSX-Vk

At 00:12-00:15 you can see the guy in the back with a guitar. In this time frame he brings his guitar up to his face, and as he does this, the guitar goes from a low pitch, to almost a high scream. How is he doing this? Is it an effect, or a technique? Thank ya.

-Thud
#2
i think he hits a natural harmonic while his whammy bar is down, and brings the bar up as the string squeals for that technique
Up the Punx!