The Flute and Flute Playing (Dover Books on Music) by Theobald Boehm

Author:Theobald Boehm [Boehm, Theobald]
Language: eng
Format: epub
Publisher: Dover Publications
Published: 2014-05-05T03:00:00+00:00

FIG. 24. Briccialdi’s B Thumb Levers.

FIG. 25. Boehm’s B Thumb Levers.

[A lever for making the trill of B and C, B tr in Figs. 24, 25, 26 and 27, played with the first finger of the right hand, has been combined with each of these arrangements. Boehm seems never to have considered these levers as essential parts of his system, but rather as extra attachments; this is indicated by the fact that they are used only incidentally in the Tables of Fingerings. Boehm considered his own arrangement more rational than that of Briccialdi, since the thumb is placed on the key B, Figs. 25, 27 and 28, to produce the tone B, and to produce the next lower tone B, the thumb is moved downwards to the lever B. On the contrary, in Briccialdi’s arrangement, the thumb is placed on B, Figs. 24 and 26, to produce the tone B, and to produce the lower tone B, the thumb is moved upwards to the lever B.]

[In addition to the mechanism described, Boehm recommended the “Schleifklappe,” referred to in the original only in connection with the Bass Flute. The schleif-key, usually called the “octave-key” or the “whisper-key,” is simply a small vent-key, which assists in the formation of a loop in the sound wave, or, what is of the same effect, it prevents the formation of a node at the place where the hole is located, thus giving freer speech and greater purity of tone. It is an adaptation of a similar octave-key which is required on all reed instruments, in which the formation of the overtones is not as certain as on the flute. The octave-key is a small closed key, the touch of which is at S, Figs. 27 and 28, just above the thumb key; it is always played in connection with the thumb key and is easily opened by a slight rolling motion of the thumb. The hole for this key on a C flute is from 4.5 to 5.0 millimeters in diameter and is placed about 7 millimeters above the C hole. The applications of the fingerings for the flute, in C are the same as for the bass flute, which are given in the supplementary tables of fingerings on page 129. Boehm writes in a letter dated November 8, 1873 (Broadwood, p. 59): “I find this little key very useful if the player wishes always to be in perfect tune in the following notes:

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