 It seemed appropriate to start off in a slow, melodic fashion and then build and build and build to the climax with the big harmonic squeals at the end.For that last big note I think there's four guitars going on.There's a squeal at the second fret of the G string, a squeal at the fifth fret of the G and then I used a DigiTech Whammy pedal on two-string squeals at the harmonics at the fourth and 12th frets of the G and B strings, I believe.