Guo Musical Instrument Company 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 flute. This
Voice flute to that of the soprano voice, the origin of the term "voice flute" is obscure (; ). Revived in the early twentieth century along with other sizes of recorder, it is used today as it was in the eighteenth century—as a substitute for the transverse flute—though it also has a small repertory of music composed specially for it, from both the Baroque and modern periods. The voice flute was a popular size of recorder in the eighteenth century, especially in England. It offered an alternative instrument for amateurs to play music written for the transverse flute, since both instruments are