The following text is extracted from “The Cambridge Companion to Brass Instruments”
Edited by Trevor Herbert
The Open University, Milton Keynes, 1997
(ISBN-13: 9780521565226 | ISBN-10: 0521565227)
Reproduced here with the permission of Cambridge University Press.
Embouchure (pages 199-201)
The word embouchure is important to brass players. It is used to describe the precise arrangement, in the playing position, of an individual player’s mouth in relation to the mouthpiece. Because of the demands placed upon the modern orchestral brass player, there has evolved, for each instrument, and ideal embouchure model, which the beginner would do well to emulate. There is a form of natural selection among embouchures, where only the fittest can survive the demands of the repertory expected of the present-day player. The difficulty of achieving such an ideal embouchure (and thinking on this is still in the process of evolution) can be judged by the variation of embouchures seen among beginners and amateurs. In more advanced players, for example full-time students, it can be seen that the range of variation in embouchure structure has narrowed; and this range is further reduced among professionals to the point where, with a few rare exceptions, most use a similar model.
Ideally, a good embouchure should be able to produce any note at any dynamic. It should then be able to change to any other note without compromising its structure. And ideal embouchure has minimal visible movement. On instruments with larger mouthpieces, trombone and tuba especially, producing deeper notes requires the jaw to be lowered to vibrate at lower frequencies. This action also helps the lower register by increasing the resonating space inside the mouth. Jaw position and more obviously visible adjustments between registers are more evident on the larger brass. In general, however, the embouchure should allow the player to roam from high to low without pausing to re-seat in an embouchure “break”.
An embouchure break occurs when, for example, the beginner who has established a foothold in the middle register establishes another in the upper register, with a different embouchure seating, and perhaps yet another in the lower. And experienced teaching will guard against this, encouraging the gradual development of range by incremental degrees – perhaps a semitone at a time – to slowly build up strength and to ensure that the entire range is integrated under one well-formed embouchure. Most methods follow this incremental approach, building strength in the facial muscles through a cycle of play-rest-play-rest. Patient repetitive practice of basic embouchure foundation and maintenance exercises has to be built into a disciplined routine for any achieving brass player. A regime of self-training invariably includes ong tones; adding crescendo and diminuendo to these to learn and maintain dynamic control; slurring between notes on the same harmonic series at first slowly, then gradually quicker. These last, commonly and somewhat misleadingly called “lip flexibility” exercises, stimulate the development of the many embouchure muscles as does exaggerating the vibration of the lip to form a buzz. This last has been a central tenet of much twentieth-century brass teaching, on lips alone, or with the mouthpiece, away from the instrument. Although there is some controversy about its ultimate usefulness, it would seem to be a useful tool in embouchure forming, and in habitualising minimal frontal pressure of the mouthpiece on the lips.
The tuba amplifies many of the problems which beset brass players, not the least of which is control of the air supply. A large amount is needed, especially to play loudly in the low register. The tuba player has to become a more efficient breathing machine than other brass players, among whom there exists a tremendous amount of argument an confusion about breathing and blowing. Arnold Jacobs, former tuba player with the Chicago Symphony Orchestra, was one of the first to point out that brass players were not helping their playing by jumping to false conclusions about breathing. Nevertheless, some players perform very well without a thought about breathing, whilst others excel despite adhering to bizarre theories.
Sep 21, 1997 | Categories: hornplaying, hornteaching, publications | Tags: amateurs, Arnold Jacobs, beginners, buzz, embouchure, embouchure break, harmonic series, jaw, lip flexibility, mouthpiece, natural selection, range, trombone, tuba | Leave A Comment »