The bass flute is the bass member of the flute family. It is in the key of C, pitched one octave below the concert flute. Because of the length of its tube (approximately 146 cm), it is usually made with a "J" shaped head joint, which brings 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.
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Prior to the mid-20th century, the term "bass flute" was sometimes used, especially in Great Britain, to refer to the alto flute instead (for example: the part for "bass flute in G" in Gustav Holst's The Planets).
The instrument's sounding range is from C3, one octave below middle C, to C6, two octaves above middle C. Bass flute music is written an octave higher than it sounds which is the typical concert flute range (C4 to C7). Notes written above A6 are not often used as they are difficult to produce and have inferior tone. Because manufacturers do not taper the flute body through the curve, intonation of all notes beginning with written D6 and higher tend sharp. The player can bend them in tune through blowing technique or use alternate fingerings.
Bass flutes often have a C foot rather than the B foot common to other flutes. The shorter tube reduces acoustic resistance, which quickens the response and makes the tone brighter, livelier, and more resonant. The shorter tube also makes the instrument somewhat lighter and less fatiguing for the player to hold.
Bass flutes are most often made with silver plated bodies and head joints. Most basses come with trill keys which allow the player to stabilize some otherwise unstable middle register notes as well as trill between otherwise impossible notes. Kotato basses have addressed the weight problem of bass flutes by designing a graphite rod that screws onto the underside of the instrument and then rests on the chair seat between the player's legs. Adjustable rods have also been developed by Jeff Amos. Other manufacturers have added a left hand thumb support called a crutch, which helps some players with physical control of the instrument.
Many composers are beginning to write more for the bass flute, including Katherine Hoover's Two for Two, Bill Douglas's Karuna, Mike Mower's Obstinato and Scareso, Gary Schocker's A Small Sonata for a Large Flute, Sonny Burnett's Stone Suite, Catherine McMichael's Baikal Journey and Ennio Morricone's Secrets of the Sahara. Other important works include Tristan Murail's Ethers for solo bass flute and small ensemble, Brian Ferneyhough's Mnemosyne for bass flute and tape, Mario Lavista's Lamento a la muerte de Raúl Lavista for solo bass flute, Michael Oliva's Moss Garden also for bass flute and tape and Marc Tweedie's Zoli, written for renowned flautist Carla Rees. Studies and concert etudes are beginning to appear that address the instrument's many challenges (physical balance, finger technique, air stream, overblowing, etc.). Peter Sheridan has commissioned and arranged new compositions in this area, including a set of 'Etudes for Low Flutes' by Hilary Taggart. The sixth movement of Claude Bolling's suite for Flute and Jazz Trio, 'Versatile' has the soloist playing the opening melody on a bass flute.
For an extensive list of repertoire for bass flute and contrabass flute see: Peter van Munster, Repertoire Catalogue for Piccolo, Alto Flute and Bass Flute, Roma: Riverberi Sonori, 2004 and the website [altoflute.net] for a searchable and downloadable catalogue. Selected repertoire graded into ability levels with short descriptions and information about basses can be found in The Alto and Bass Flute Resource Guide published by Falls House Press.
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