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
Members of the western concert flute family or curved. The bass flute is pitched in the key of C, and one octave below the concert flute. Because of the length of its tube (approximately ), it is usually made with a curved headjoint, sometimes in a "J" shape, to bring the embouchure hole within reach of the player. It is usually only used in flute choirs, as it is easily drowned out by other instruments of comparable register, such as the clarinet. The contra-alto flute (also called contrabass flute in G) is in the key of G, pitched one octave below the alto flute, and a fourth