Tap harmonic
From Wikipedia, the free encyclopedia
Tap harmonic is a technique used with fretted string instruments, (usually guitar). It is executed by tapping on the actual fret wire 12 frets (an octave) or 7 frets (a 5th) higher than the fretted note on the same string. It can also be done by gently touching the string over the fret wire instead of tapping the fret wire if the string is already ringing. This technique was coined by Eddie Van Halen along with fretboard tapping.

