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
Subcontrabass flute it has great opportunities for dynamic power and accent. A–D The tone becomes less secure and loses some of the lower partials and it is great for blending. E–C has a weaker and somewhat unfocused pitch center which may be a good choice for blend or effect. The double contrabass flute (or "octobass flute"), an instrument in the key of C pitched a fifth lower than the subcontrabass flute in G, is sometimes referred to as a "subcontrabass flute", as for, example, in the instruments made by Jelle Hogenhuis. "And the Giant Began to Dance..." (Peter Sheridan), on the album