Contra-alto flute repertoire for bass flute and contrabass flute see: Peter van Munster, "Repertoire Catalogue for Piccolo, Alto Flute and Bass Flute", Roma: Riverberi Sonori, 2004. More and more flute ensemble repertoire is incorporating the contra-alto flute. Typically, it is doubled with the contrabass (and/or bass) flutes, however, in recent years, composers and arrangers such as Alexandra Molnar-Suhajda and Judy Nishimura have been pushing the boundaries of lowness by writing independent parts for the instrument. Contra-alto flute The contra alto flute is in the key of G (or sometimes F), pitched one octave below the alto flute - which is a fourth
Treble flute Treble flute The treble flute is a member of the flute family. It is in the key of G, pitched a fifth above the concert flute and is a transposing instrument, sounding a fifth up from the written note. The instrument is rare today, only occasionally found in flute choirs, some marching bands or private collections. Some 19th-century operas, such as "Ivanhoe" include the instrument in their orchestrations. A limited number of manufacturers produce G treble flute, including Myall-Allen and Flutemakers Guild. The flutes have many of the same options as their larger C flute cousins, including sterling silver bodies,