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
Inlay (guitar) Inlay (guitar) Inlay on guitars or similar fretted instruments are decorative materials set into the wooden surface of the instrument using standard inlay techniques. Although inlay can be done on any part of a guitar, it is most commonly found on the fretboard, headstock —typically the manufacturer's logo— and around the sound hole of acoustic guitars. Only the positional markers on the fretboard or side of neck and the rosette around the sound hole serve any function other than decoration (the rosette serves as reinforcement). Nacre ("mother of pearl"), plastic and wood are the materials most often used as inlay.