Guo Musical Instrument Company New Design. Guo Musical Instrument Company Guo Musical Instrument Company (GMIC) is a Taiwan-based musical instrument manufacturer, specializing in flutes, piccolos, flute head joints, and saxophone necks and head joints. Founded by Geoffrey Guo in 1988, GMIC offers its products for sale online and through various retailers all over the world. Some of its instruments include a tenor flute, a G soprano flute, grenaditte flutes and a new C flute design called a Tocco flute. Many of these models of flutes and piccolos come in many different colors. In 2004, Geoffrey Guo and flute professor Mark Dannenbring developed the grenaditte
Hyperbass flute wood. There appear to be wide tone holes, made from standard tee fittings, but without keys; these are covered with the palms of the hands. The first known example of the instrument was built by Francesco Romei, a Florentine craftsman, for Italian flautist Roberto Fabbriciani. Fabbriciani is the inventor and primary performer of this instrument. He calls it "hyperbass flute" and "flauto iperbasso" in Italian. Low flute specialist Peter Sheridan commissioned the first fully chromatic hyperbass flute from the Dutch maker Jelle Hogenhuis in August 2010. The first composition for the hyperbass flute with live electronics and magnetic tape is