Yep. That sounds like a pinch harmonic. Takes a little practice to learn, but once you get it, it's like riding a bike.
Yeah, no pedal required, however, the more distortion, the easier it is to hear.
I don't believe in signatures. Ah, sh...
Unless of course you're referring to Dime Squeals, then that requires a trem system.
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Check out my band, Prosper! Prog/Metal/Core from Columbus, Ohio.
artificial harmonics also
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because that's where you'll find me..."
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Kick a pig.

Pinch Harmonics definatly.

excellent advice +1
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Thank you Jesusaurus.
[quote="'[VictorinoX"]']That's getting sigged, bro

Beat me to it...
1987 Ibanez Jem 777LNG #124
2012 Herc Fede PMC Jem
1987 Ibanez RG550 Road Flare Red-R
Marshall JCM-1 W/Lead 12 Cab.
Wampler, Ibanez, MXR, Morley Pedals
Bump the mids on your amp also to really bring them out even more.
2003 Music Man Axis Pacific Blue Burst
When your first learning them a lot easier for them to come out when you have more gain. That and practice, keep practicing and eventually you'll get it.
The Rig
Gibson Flying V
Blackstar HT-5 Stack
Dunlop Crybaby Wah
Boss DS-1
Boss DD-3
It's when you are licking and riffing and such and you pop a rude squealie

Also: link above ^^^