insertwordshere i can't. i don't really know what reletive harmonics is. i just do the fifth fret string by string one.
MoreCowbell Here be some interesting reading ARGHHHH!http://www.guyguitars.com/eng/handbook/Tuning/methods.html#My%20favourite%20method
BobArsecake The keyboard player in my old band was pitch perfect, the bastard, very good mind, and useful in listening exams where he'd tell you the actual chord (when listening for what type of chord), so you'd look like a right smart arse.