Alto flute
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| Classification | Woodwind (Aerophone) |
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The alto flute is a type of Western concert flute, a musical instrument in the woodwind family. It is the next extension downward of the C flute after the flûte d'amour. It is characterized by its distinct, mellow tone in the lower portion of its range.
The tube of the alto flute is considerably thicker and longer than a C flute and requires more breath from the player. [1] However, this gives it a greater dynamic presence in the bottom octave and a half of its range.
Said to be developed and popularized by Theobald Boehm, it is pitched in the key of G (sounding a 4th lower than written). [2] Its range is from G3 (the G below middle C) to G6 (4 ledger lines above the treble clef staff) plus an altissimo register stretching to Db8. The headjoint may be straight or curved.
Both have Boehm-system keywork, and the fact that they are transposing instruments means that the player can use the same fingerings on each instrument. [3]
In addition to being used in various flute choirs and concert ensembles, alto flutes are also popular in many jazz groups. It is considered a doubling instrument for saxophonists (saxophone). [4] It is a harmonic instrument which allows the changing of notes without adjusting the keys.
In the classical literature, the alto flute is particularly associated with the scores of Igor Stravinsky and Maurice Ravel, both of whom used the instrument's distinctive tone color in a variety of scores. It is featured in Ravel's Daphnis et Chloé, Stravinsky's The Rite of Spring, Franco Alfano's opera Cyrano de Bergerac, and Sergei Prokofiev's Scythian Suite. Shostakovich used it in his operas The Gamblers (incomplete), Lady Macbeth of the Mtsensk District (also known as Katerina Ismailova), as well as in his Symphony No. 7 (Leningrad). It also figures prominently in several movements of Gustav Holst's The Planets.
It also appears in Howard Shore's music for The Lord of the Rings among many other contemporary film scores.
British music that uses this instrument often refers to it as a bass flute, which can be confusing since there is a distinct instrument known by that name. [1]
Depicted above is the 'curved head' version, frequently preferred by smaller players because it requires less of a stretch for the arms, and makes the instrument feel lighter by moving the center of gravity nearer to the player. The straight version is more commonly used for acoustical reasons.[5]
The embouchure for alto flute is similar to that for C flute, but in proportion to the size of the instrument. Hence the embouchure-hole sits lower on the lower lip, and the lip-aperture is wider.
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