Few corners of music pedagogy are as crowded with conflicting advice as brass technique. Ask a room full of brass teachers how the embouchure works, and you will likely hear as many theories as there are teachers in the room. In a previous post I compared brass pedagogy to a medieval dark art (see How We Mess Brass Players Up). The irony is that brass instruments are not particularly mysterious. Physicists have understood the basic acoustics of lip-reed instruments since the nineteenth century, and the anatomy involved in breathing and buzzing is well documented. Yet many of us continue to play and teach based on ideas that physics and physiology contradicted long ago.
My own path to this topic has been a little unusual. I trained seriously as both a pianist and a trombonist, and I came to music with a background in physics. As a pianist, I was taught that technique and musicianship were two halves of the same thing. Every fingering, every wrist motion, and every decision about arm weight ultimately served how a phrase should sound. As a brass player, I rarely experienced that same integration. Technique was something we worked on in warm-ups and etudes, and music was something that happened later, if there was time. I have spent many years trying to bring those two worlds together in my own playing and teaching.
My background in physics has also made me a skeptic. Skepticism does not mean assuming that an idea is wrong. It means testing an idea before assuming that it is right. Over the years I have heard many confident claims from brass players about how their instruments and bodies work. Some held up to testing, and many did not. A few years ago I gathered what I had learned into a short document on trombone technique. Although I wrote that document for trombonists, nearly everything in it applies equally to trumpet, horn, euphonium, and tuba players. This post draws on it to examine some of the most common misperceptions I encounter, and to make a case for how brass technique ought to be taught.
Misperceptions About the Instrument
“The air makes the sound.” Air supplies the energy, but it is not what vibrates at the frequency we hear. The lips do that, opening and closing like a valve and releasing puffs of air into the mouthpiece hundreds of times per second. The instrument then sends pressure waves back to the lips, nudging them to vibrate at one of its resonant frequencies. The lips and the air column form a single coupled system, and neither one makes the sound alone. This matters because many players try to solve every problem with more air when the real problem lies in how the lips are vibrating, or in how well that vibration matches the instrument.
“Higher notes need more air.” Higher notes need faster, more focused air, while lower notes need slower, wider air. Loudness depends more on how much air passes through the lips. These are not the same thing. A player who responds to a high passage by blowing harder usually gets a louder, more strained note, or no note at all, when what they needed was a smaller aperture and a faster airstream. This is also why practicing the upper register softly is so effective.
“Resonance is a quality of sound.” As I have written before (see Is More Resonance Always a Good Thing?), resonance is a physical phenomenon, not a tone color. For any given valve combination or slide position, a brass instrument can resonate only at a specific series of frequencies, its partials. When the lips buzz right in the center of a partial, and the shape of the mouth and tongue supports that pitch, the instrument responds quickly and with very little effort. When the buzz drifts off center, the instrument resists. Many problems we blame on weak chops are really problems of centering.
“A harder tongue makes a better accent.” The tongue does not create the sound. It only releases it. A forceful tongue tends to make the lips overshoot the pitch at the start of a note, which pulls the attack off the center of the partial and deadens it. A relaxed tongue that moves very little, with enough air pressure behind it, produces a cleaner and more resonant attack. The same logic applies to releases. Stopping notes with the tongue may feel tidy to the player, but it usually sounds abrupt to the listener. Most notes should end the way they began: carried by the air.
Misperceptions About the Body
“Breathe from your diaphragm.” The diaphragm is the primary muscle of inhalation. When it contracts, it flattens and moves downward, drawing air into the lungs and pushing the abdominal organs outward. That is why the belly expands when we take a full breath. During exhalation the diaphragm relaxes. It does not push air out. The air we play with comes from the lungs, not the stomach, and it leaves through the elastic recoil of the lungs and rib cage, assisted by the abdominal and rib muscles when more pressure is needed. When students are told to “support from the diaphragm,” they often respond by clenching every muscle in their midsection, which makes breathing less efficient rather than more.
“Open your throat.” Few instructions are more common, and few are less specific. Air can be obstructed at several points between the lungs and the lips: at the glottis, where the vocal folds can close; at the back of the tongue; and at the soft palate. A grunt-like closure of the glottis, a tongue arched too high, or tension in the neck can each choke the airstream in a different way. Students cannot feel their “throat” in the way the instruction implies, so telling them to open it rarely helps. It is far more useful to identify which of these points is actually closing and then address it directly.
“Tighten to play higher.” An embouchure needs to be firm, not tight. The lips should barely touch, the corners should neither smile nor pucker, and the facial muscles should hold just enough to resist the air. Ascending in range is mostly a matter of the aperture growing smaller as the lips roll slightly inward, paired with a faster airstream. When students hear the word “tighten,” they usually tense their neck, shoulders, and abdomen, all of which work against them.
“A good embouchure doesn’t move.” The embouchure is not a shape we set before we play. It exists only while air is moving through it, and it changes continuously as we play. The aperture shrinks and grows, the lips roll in and out, the tongue arch rises and falls, and the mouthpiece and lips travel together as a unit across the range. Trying to freeze all of this in place leads to excessive mouthpiece pressure and a limited range. On trumpet and horn these movements are much smaller and harder to see than on trombone or tuba, which leads many high brass players to believe they do not happen at all. Mouthpiece cameras and high-speed video show otherwise. The goal is not to eliminate movement, but to make it smooth and gradual.
“Great players use no mouthpiece pressure.” When I was first learning to play in the mid-1990s, many teachers were preoccupied with playing “without pressure.” That school of thought contained some genuine wisdom, but it also spread a great deal of misinformation. Playing without mouthpiece pressure is not possible, and it is not even an accurate description of what good players do. Everyone uses mouthpiece pressure, and often more than they realize.
Pressure plays a vital role in how the embouchure works. It keeps an airtight seal between the lips and the rim, and it separates the portion of the lips that vibrates from the portion that does not. We also need more of it as we play higher and louder. The problem is the wrong kind of pressure, applied in the wrong ways, for the wrong reasons. Pressure should never serve as a crutch for forming the embouchure, and it cannot be the primary engine for playing higher. Instead, it should be a passive consequence of everything else that makes higher and louder notes possible: a smaller aperture, a firm embouchure, and a faster airstream.
For this reason, rather than attacking pressure directly, I have learned to focus on correcting the sound production underneath it. As a student’s fundamentals become stronger, it becomes possible to steadily reduce the harmful kinds and amounts of pressure, because the embouchure no longer depends on them. The difficulty with this approach is that it requires far more detail and nuance than simply telling a student to “get rid of the pressure.” In my experience, however, the simpler instruction rarely solves anything.
“Endurance is a matter of strength.” Strength plays a role, but coordination plays a far larger one. A note centered in its partial takes very little effort to sustain. A note pushed off center takes a great deal more effort for less sound. Endurance problems usually come from playing off center, playing too loudly for too long, and resting too little (see How We Mess Brass Players Up), not from weak muscles.
Every Embouchure Is Unique
If the physics of brass instruments is so well understood, why does brass teaching remain so contentious? Much of the answer lies in the player rather than the instrument. Our lips function as the reed, and no two sets of lips are alike. They differ in size, thickness, and elasticity, and they sit over teeth and jaws that differ just as much. Some players direct their airstream downward into the mouthpiece, and others direct it upward. Both approaches have produced outstanding professional players.
The principles, however, are universal. The lips should barely touch. The embouchure should be firm without excess tension. Mouthpiece pressure should follow from the needs of the note rather than substitute for the embouchure. The aperture should shrink for higher notes and grow for lower ones, and the airstream should speed up and focus as we ascend. What differs from player to player is how each person’s body accomplishes these things.
This is why I try to teach brass technique in two layers. First, I refine a student’s understanding of the fundamental principles of how any embouchure works. Second, I give them the freedom to discover how their own embouchure functions. Rather than telling a student exactly where to place the mouthpiece, I would rather ask them what they notice when it sits higher or lower, and what changes when it feels just right. I treat every adjustment as an experiment rather than a prescription. The student runs the experiment, we both observe the results, and the evidence decides. A teacher’s opinion matters far less than what actually works for the student in front of us.
Two Worlds, One Set of Physics
The divide between jazz and classical brass playing creates another source of confusion. Jazz and commercial players and classical and orchestral players often teach very different things, and at times their advice is directly opposite. Listening to each side, one might conclude that there are two completely different techniques, and perhaps even two different sets of physical laws, depending on the style of music being played.
As someone who has spent my career working in both worlds, I have come to a simpler conclusion. There are different sets of musical demands, but there is only one set of laws of physics. A lead trumpet player in a big band and a principal trumpet in an orchestra are asking their instruments and bodies for different things: different registers, different sounds, different articulations, and different kinds of endurance. They may reasonably choose different equipment and develop different strengths. However, their lips still vibrate the same way, their instruments still resonate the same way, and their lungs still work the same way.
I have gained valuable insights from both worlds. I have also found plenty of misconceptions coming from both. In my experience, many of these misconceptions grew out of the aspects of musicianship that each side cared less about. When a tradition does not prioritize something, it rarely develops an accurate explanation of how to do it. Its players then pass along explanations that work well enough for their own priorities, and over time those explanations harden into universal rules.
Fortunately, these differences have begun to fade. The economics of the music industry now demand far more versatility from brass players than they did a generation ago. Orchestral players perform film scores and pops concerts. Jazz players play in pit orchestras, recording sessions, and chamber groups. Most working musicians I know cross stylistic boundaries every week, and our students will need to do the same. When the musical demands become this diverse, a technique built on folklore from one tradition stops being enough. What remains is an understanding of how the instrument and body actually work, which serves every style of music equally well.
Technique Exists to Serve Music
The purpose of technique is to reduce the physical demands of playing so that we are free to be expressive. That definition has an important consequence: technique cannot be taught in isolation from music. I realized early in my career that I could never be a teacher who only taught technique. My students do not come to me to become efficient machines. They come to become musicians.
This is where my training as a pianist has shaped my brass teaching more than anything else. Pianists certainly practice scales, arpeggios, and technical exercises. However, my piano lessons were built around repertoire, and technical problems were solved inside the music that demanded them. Brass students, by contrast, often spend far more lesson time on etude books than on solo literature. It is not unusual for a student to arrive at college having played dozens of etudes and only a handful of sonatas or concertos.
Etudes have real value. A good etude isolates a particular technical challenge and repeats it far more often than any piece of repertoire would, allowing us to master that skill more fully. However, etudes cannot replace repertoire, and too often they do. Repertoire teaches style, phrasing, and interpretation. It teaches us to collaborate with a pianist or ensemble, to understand a composer’s world, and to communicate with an audience. Brass repertoire has grown enormously over the past century, and our students deserve to know it. A skill learned only in etudes tends to stay in etudes until we learn to apply it to real music.
In my own teaching, repertoire sits at the center, and etudes serve as targeted supplements, much as technical exercises do for a pianist. When a passage in a piece reveals a weakness, we find an etude or exercise that addresses it, practice it until the skill improves, and then return to the music. The technique is always in service of a musical goal.
Taking the Mystery Out of Brass Playing
None of what I have described here is new. The physics of how lips and air columns interact has been understood for well over a century, and the anatomy of breathing has been understood for even longer. What has been slow to change is how that knowledge reaches the practice room. Too much brass teaching is still passed down as folklore, repeated because a respected teacher once said it rather than because anyone tested it.
I do not claim to be a guru on any of this. In fact, I distrust the very idea of brass gurus. I tell my students all the time never to believe something simply because I said it. I would encourage every brass player and teacher to approach these ideas, including mine, with the same healthy skepticism. Test them in your own playing. Keep what works, discard what does not, and stay curious about why. Above all, never lose sight of why we develop technique in the first place. Brass playing is not a dark art. It is physics, anatomy, and music working together, and our students deserve to be taught all three at once.
Happy practicing and studying!