I'll have to agree with you guys, I didn't think the strings, particularly the thicker E,A,and D strings, would be able to vibrate like they do in the video clip, it stands to reason that when an open string is plucked, it will vibrate at the fundamental pitch as well as at all the harmonics too, have you ever seen what the signal from an electric guitar looks like on the screen of an Oscilloscope?, I might post a pic in this thread once I get myself a new digital camera.