Originally Posted by: iamthe_eggmanWhoa.. hold your horses there... artificial harmonics are when you fret a note and tap a harmonic with your picking hand.

OK, now the debate is settled: http://en.wikipedia.org/wiki/Artificial_Harmonics

Click that link and read it again....

Natural harmonic: when you lightly touch the string directly above a fret and pick the open string.

Artificial or Pinch harmonic: Pick any note and dig your thumb that's holding the pick into the string.

Tap harmonic: fret a note and tap directly on a fret to produce a harmonic. For example, fret the A string on the 3rd fret and tap the A string directly on the 15th fret....The beginning of Van Halen's Spanish Fly are tap harmonics.