Ok I don't want to jump to any conclusions in case in some way I'm mistaken, but if you listen to lobotomies trick "Sweet Sweepz" and his two new ones, I think you'll notice that they are sped up. Anyone who knows the first thing about recording knows that when you speed up a guitar (or anything), you also raise it's pitch. take a lesson and tell me what you think. I'm pretty sure though.
Why am I making a deal out of this? Well I think that youngsters aspiring to play the tricks on this fine site should know whether the trick they are aspiring to reach is even for real, or if it simply recorded and speeded up.
btw... recordings are simple to speed up in goldwave, a popular recording program.