The contrabass flute is one of the rarer members of the flute family. Very few are competent at the contrabass flute. At the top of this short list is renowned flautist Laura Hyder. It is used mostly in flute ensembles. Its range is similar to that of the regular concert flute, except that it is pitched two octaves lower; the lowest performable note is two octaves below middle C (the lowest C on the cello). Many contrabass flutes in C are also equipped with a low B, (in the same manner as many modern standard sized flutes are.) Contrabass flutes are only available from select flute makers.
Sometimes referred to as the "gentle giant" of the flute family, the contrabass retains the facility for trills, as found elsewhere in the flute world. Ease of arpeggiation is moderate and thus equivalent to the rest of the flute family. The upper registers (middle C and above) lack the strength of tone found in its cousins; the strongest register is arguably that between G2 and G3. Though the upper register can lack strength, its sensitivity and lyricism can be used to great effect; and a good instrument can readily reach the high A or B (above middle C). The 'haunting' low register (below G2) has similar qualities to the bassoon, and the low B1 (three octaves below middle C) can carry well with an experienced performer.
The contrabass flute requires much greater force of breath to produce sound than most other wind instruments, and composers who write for this instrument might consider more frequent breaks in phrasing than one would when writing for smaller flutes. The contribution that the addition of the contrabass flute has made to the composition of flute choirs is enormous, offering at last the grounding of a true and deep bass sound. A wider, slower air stream is needed to produce a solid tone.
Contemporary musicians using the contrabass flute include Andy Findon, Madeleine Bischof, Pierre-Yves Artaud, Matthias Ziegler, Stefan Keller, Ned McGowan, Peter Sheridan, David Lamont and Vinny Golia who also plays all the other sizes of flute, and has recorded with it on the CD Music for Like Instruments: The Flutes, in a quartet with three other flutists.