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
Eleven-string alto guitar Strömberg. Ermanno Chiavi in Switzerland is known for his 13-string guitar built for Anders Miolin, but he builds 11-string guitar as well. Chiavi's guitar has the scale length of a normal classical guitar, 650mm, and is tuned in the same manner as classical guitar. Therefore, it is technically not an "alto" guitar. Yoshimitsu Hoshino in Japan built 11-string alto guitars with the same specification with Bolin's design in 1980s. However, he no longer makes them. Some of the guitarists who use the instrument are as follows: Eleven-string alto guitar The eleven-string alto guitar (also known as altgitarr, archguitar, or Bolin