okay, so this is actually a GUITAR technique question, but i hope that yallz will be able to help me with it. i actually have no idea how to make that sound. has it to do with picking? do i let my thumb hit a certain part of the string? i really have no clue. what i do know: when i was using a guitar mag's transcription of tool's parabola, there was a section of the guitar "solo" where it instructed "slight harmonic." this is the part where those "off" notes are, and i really want to be able to play it. any input (positive input, that is) is appreciated.