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
Hand flute same with an ocarina or Helmholtz resonator; see vessel flute for details of the acoustics. The best hand flute players in the world have a range between 2.5 to 3 octaves. Hand flute The Hand flute or Handflute is a sort of musical instrument made by the hands. It is also called a 'Hand ocarina' or 'Hand whistle'. To produce sound, one creates a type of chamber with their hands which they blow into between an opening at the thumbs. There are two main techniques involving the shape of the hand chamber: the "cupped hand" technique and the "interlock" technique.