Many players of wind instruments talk of the perceived importance of the shape of the mouth on the sound. In the case of the didjeridu, the effect on the timbre is so clear as to be incontestable. Among scientists, however, there is considerable variation in opinion about the effect on pitch [1- 4]. In this paper we report experiments on well-characterised model systems: artificial wind instrument players. Using plausible values of the relevant parameters, these show that vocal tract shapes can have important effects on both pitch and timbre.
Many brass performers and teachers, including myself, have cited Bernoulli’s principle as assisting the air speed as it strikes the vibrating lips for the importance of tongue position while playing. I’ve asked some physics teachers and engineers about this and almost all of them, with some exceptions, have suggested that this might be true. That said, this presentation was focused on the vocal tract impedance (if I understand this correctly, that is how the shape of the vocal tract influence pitch and timbre of a particular pitch).
On the didjeridu the influence was quite strong, perhaps in part due to the larger bore size of the instrument and the much larger vibrating area (there are a lot more of the lips inside the “mouthpiece” of the didjeridu than inside a trombone mouthpiece). They did note that it was an influence on the trombone, however.
The shift in pitch, over the range studied, is typically 20cents: a musically important effect for intonation. Preliminary measurements on experienced brass players showed a comparable shift in pitch when they were asked to lower the tongue, keeping all else constant.
They also noted that a change in tongue position can “cause a transition between different playing register.” In other words, you can shift tongue position and change partials on a brass instrument.
This has some interesting implications for brass performers and teachers. Some folks swear that they keep their tongue position consistent, regardless of what register they play in. This view is in the minority and I suspect that players who claim this aren’t even aware of their shifting tongue position. That said, different people are going to have variations in the size and shape of their mouth and tongue and it would be interesting to compare those players. I’m also curious about the difference between different traditional brass instruments. Do trumpet players change the position of their tongue more or less than tuba players?
Regardless, I think that research like this suggests that tongue position is an important part of playing in tune and with a focused tone on a brass instrument. Players and teachers dealing with intonation issues or poor tone may want to investigate what is happening with the tongue position and work out practice approaches that can help a player learn how to achieve an optimal tongue position according to the register being played.
Here’s a lengthy video by trumpet player Charlie Porter on how to form a brass embouchure.
I have had some disagreements with Porter in the past. I have some quibbles with some of his instructions too, but I like his recommendation to set firm the lips up before setting the mouthpiece on the lips. Two of the other steps he recommends (pulling the lips open after setting the mouthpiece and wetting the lip center with the tongue after that) I feel would risk undoing the value of firming before setting.
Watching through the video I didn’t understand if he was suggesting the embouchure aperture remains open throughout the lip vibration, so I asked him about it. He was kind enough to take the time to clarify for me.
Of course the lips rapidly close and open during vibration. That’s not the point…I’m not arguing that they they never close briefly, per each vibration occurring…the point is that players are often way too tight and begin with closed lips and press them together to the point of distorting the vibration.
It’s a rather long video, but take look at it if you’re interested in different thoughts about setting the embouchure formation for playing.
The idea of students having a “learning style” refers to a concept that that individuals differ on how the best learn, develop, and retain information. For example, someone who is considered to be a “visual” learner needs to see the information in some way, while an “aural” learner will want to hear it explained. On its surface this seems like a good thing, since we are all individuals and experienced teachers develop strategies to help students with different needs and backgrounds learn better. Unfortunately, the idea of catering lessons to a particular student’s learning style doesn’t show that it actually helps. In fact, it can even leave some students behind when proven methods of instruction are avoided in favor of what essentially amounts to a preference on the student’s part. Teachers end up working with a student’s strengths and not addressing the weaknesses.
In spite of the lack of evidence to back up the learning styles theory, this is a pervasive myth among educators, students, and the general public. Companies that want to sell lesson plans and other educational support materials to schools and teachers are, in part, to blame for the continued belief in this myth. Here’s one example that purports to tell you your learning style by asking you 20 questions. I tried it out and learned that I was an “auditory” learner.
If you are an auditory learner, you learn by hearing and listening. You understand and remember things you have heard. You store information by the way it sounds, and you have an easier time understanding spoken instructions than written ones. You often learn by reading out loud because you have to hear it or speak it in order to know it.
As an auditory learner, you probably hum or talk to yourself or others if you become bored. People may think you are not paying attention, even though you may be hearing and understanding everything being said.
Here are some things that auditory learners like you can do to learn better.
Sit where you can hear.
Have your hearing checked on a regular basis.
Use flashcards to learn new words; read them out loud.
Read stories, assignments, or directions out loud.
Record yourself spelling words and then listen to the recording.
Have test questions read to you out loud.
Study new material by reading it out loud.
Remember that you need to hear things, not just see things, in order to learn well.
The problem with assessing a student’s learning style with questions like this survey is that it doesn’t actually address learning. Asking someone the “best way to study for a test” doesn’t offer information on how a student best learns because it doesn’t assess whether the student did well on the test! The only way to assess whether learning styles are helpful is how well they learned the material, not what someone prefers to do for fun or what strategies they want to try.
Another online “test” (I won’t link because it wants you to register before it gives you results) is a bit more thorough one that has some more nuance to the questions and asks more, but again, I find many of the questions odd (“You have a good sense of color” “You hear small things that others don’t” – can a so-called visual learner be color blind or can someone with some hearing loss still be a so-called aural learner?) and none of the questions assess learning.
A good summary of why learning styles is a myth can be found in this Wired article.
Convincing evidence for learning styles would show that people of one preferred learning style learned better when taught material in their favored way, whereas a different group with a different preference learned the same material better when taught in their favored fashion. Yet surprisingly few studies of this format have produced supporting evidence for learning styles; far more evidence (such as this study) runs counter to the myth. What often happens is that both groups perform better when taught by one particular style. This makes sense because although each of us is unique, usually the most effective way for us to learn is based not on our individual preferences but on the nature of the material we’re being taught – just try learning French grammar pictorially, or learning geometry purely verbally.
Teaching children according to their individual “learning style” does not achieve better results and should be ditched by schools in favour of evidence-based practice, according to leading scientists.
Thirty eminent academics from the worlds of neuroscience, education and psychology have signed a letter to the Guardian voicing their concern about the popularity of the learning style approach among some teachers.
What about all that literature that supposedly supports learning styles? Harold Pashler, Mark McDaniel, Doug Rohrer, and Robert Bjork wrote a review of the literature.
Our review of the literature disclosed ample evidence that children and adults will, if asked, express preferences about how they prefer information to be presented to them. There is also plentiful evidence arguing that people differ in the degree to which they have some fairly specific apti- tudes for different kinds of thinking and for processing different types of information. However, we found virtu- ally no evidence for the interaction pattern mentioned above, which was judged to be a precondition for vali- dating the educational applications of learning styles. Al- though the literature on learning styles is enormous, very few studies have even used an experimental methodology capable of testing the validity of learning styles applied to education. Moreover, of those that did use an appropriate method, several found results that flatly contradict the popular meshing hypothesis.
Searching online for evidence that both supports and refutes the theory of learning styles shows a general difference between those supporting and those debunking. Sites and “articles” that support learning styles tend to lack citations and when they do have them, the studies listed either are from companies that want to sell their materials to teachers, are poorly done, or even state the exact opposite of what that source is claiming. On the other hand, criticisms of learning styles tend to be well researched with peer reviewed articles from reputable authors and journals and provide a much more nuanced view of teaching and learning.
The bottom line for teachers is that while we can and should use every tool available when necessary, it’s important to look at the bigger picture – whether learning is taking place and whether the results we’re getting from our students is what they are truly capable of. By all means, reinforce the students’ strengths, but address their weaknesses too.
A thread on the Facebook Trombone Pedagogy group lately has been discussing different thoughts on coordinating breathing with setting the embouchure and placing the mouthpiece. I thought I’d take this opportunity to discuss my preferred way of teaching students to coordinate air and embouchure together, based on Donald Reinhardt’s instructions from his writings, including his Encyclopedia of the Pivot System.
While the jaw is in its playing position, form the saturated embouchure with ALMOST buzzing firmness, so that the lips are “just touching” at the vibrating points. When in doubt, form the lips as if to buzz. . .
Place the mouthpiece upon the embouchure formation as just prescribed and use sufficient “contact pressure” to locate and sustain its position in the playing groove of the embouchure. The actually placement must be executed in accordance with the [embouchure] type. . .
Inhale the high-pitched, whispered “IM” (not “OM” or “UM”) through both mouthcorners – NEVER THE MOUTHCENTER – simultaneously. . . In short, eliminate “gear shifting” and inhale with a minimum of embouchure distortion.
At it’s heart, Reinhardt’s advice is to work towards unifying the player’s pre-playing sensations with the playing sensations. In other words, he felt it was valuable to have as little change as possible in the position of the lips and mouthpiece upon the lips from inhaling to playing. In order to encourage this, he instructed his students to practice (during certain exercises – not during rehearsing and performance) to firm the lips as if buzzing first, place the mouthpiece on the firmed lips, inhale through the mouth corners while maintaining mouthpiece pressure and holding the lip center just touching, then commence blowing by coordinating the mouth corners snapping into their correct position. Taking breaths in the middle of phrases is to be simply a matter of continuing to breathe through the mouth corners while keeping everything under the mouthpiece rim and inside the mouthpiece should remain more or less in playing position.
Many players, including some excellent ones, either don’t consider their embouchure when breathing or are so focused on moving lots of air that they don’t feel that minimizing the embouchure “gear shift” between inhaling and blowing is valuable. Some players will open their mouth very wide to inhale and the mouthpiece placement shifts slightly every time they begin blowing. Some players will set the mouthpiece on relaxed lips and firm them only just as they begin blowing, which can result in twisting or winding the lips up under the rim or distortions and inconsistency in their overall embouchure formation from breath to breath. Consistency in a player’s embouchure formation should result in better playing consistency.
One of the biggest challenges to adopting this approach is that it’s difficult to take in as much air as quickly when you’re only breathing through the mouth corners. Trumpet and horn players may find the smaller mouthpiece size makes keeping the lip center just touching inside the mouthpiece while inhaling to be easier than low brass players with their larger mouthpieces. I think it’s important to keep in mind that this approach is meant to be practiced only at specific times in your routine and then forgotten about while you move on or are performing. We can think of this approach as an ideal goal, but that not every playing situation is going to make that ideal work at every moment. By aiming towards the ideal in your practice you are minimizing the potential for this to cause issues, both short term cracking notes from time to time or the longer term (and fortunately rarer) embouchure dysfunction that can result.