String harmonic tap the fifteenth fret, as . Tap harmonic is a technique used with fretted string instruments (usually guitar). It is executed by tapping on the actual fret wire, most commonly at the 12th fret, but also can be executed by tapping any of the fret wires with proper technique. 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. See also: Shred Guitar. This technique is used by effect devices producing a magnetic field that can agitate fundamentals and harmonics of steel strings. There
Touch guitar interactions with plectrums and fingers can all be mimicked digitally: in some cases, fret spacing and relationships can also be customized. Touch guitar The touch guitar is a musical instrument of the guitar family which has either been designed or adapted to use a fretboard-tapping playing style. Although "Touch Guitar" was registered as a trademark by musician and instrument designer Markus Reuter in the late 2000s, the term has been used formally or informally for a variety of instruments since the 1950s. The touch-style playing technique has been traced back to a variety of sources and players (including Merle Travis)