#1
Anyone know ho Kurt made that cool feedback sound on you know you're right? The bit just after the chorus.
#2
Turn amp up really loud and stand in front of it....basically how all feed back works.

But you can get different feedback notes depending on what note you hold into the feedback.
Gear
Jackson RR24M - EMG ALX w/ ABQ installed
Ibanez Xiphos - stock
LTD Alexi 600 - stock
Ibanex RG - Tone Zone(bridge), PAF Pro(neck)
Blackstar HT-20H
Fulltone OCD
MXR 10 Band EQ