How to choose mouthpieces for brass band players

Why the mouthpiece matters more than you think

It is the smallest and cheapest piece of kit you own, yet it sits between you and every note you play. The mouthpiece shapes your tone, your intonation, how comfortable you feel on a long rehearsal night, and how much lip you have left by the last item in the programme. In a brass band, where a section has to blend to a single sound, those small differences matter enormously.

Players often spend serious money on an instrument and then carry on with the mouthpiece that arrived in the case. That free mouthpiece is usually a sensible general-purpose compromise, not a considered choice. The encouraging news is that trying a few alternatives costs very little compared with most brass upgrades, and a well-matched mouthpiece can make a familiar instrument feel transformed.

Get the fitting right first

Before you think about tone, make sure the basics are sound.

• Shank: a cornet takes a cornet shank, not a trumpet shank, and the two are not interchangeable. Flugel, tenor horn, baritone, euphonium and trombone all have their own shank sizes, and mouthpieces do not swap between them. Check with a repairer if you are unsure what your instrument accepts.
• Receiver fit: the mouthpiece should seat firmly with no wobble. A worn shank or a battered receiver causes air leaks, a stuffy tone and tuning drift that no amount of practice will fix.
• Numbering: every maker uses its own system, so a given number from one does not equal the same number from another. Compare measurements and, above all, how they actually play.

Give the instrument itself a quick check too. A slightly bent shank or a dented receiver can make any mouthpiece feel wrong.

What the rim, cup and backbore actually do

Each part of the mouthpiece does a different job, and they interact.

• Rim: a wider rim spreads pressure over more of the lip, which usually means greater comfort and better endurance, though it can feel less nimble. A flatter rim can help with clean articulation and a stable setting; a rounder, softer contour suits some players better.
• Inner diameter: too small and everything feels cramped, bright and tiring; too large and you may lose security in the upper register and the bite of your tonguing.
• Cup depth and shape: deeper or more funnel-shaped cups give a darker, rounder sound, which suits horns, baritones, euphoniums and basses, but they demand more air and can make the top register harder work. Shallower cups give brilliance and an easier high register, ideal for soprano cornet and much solo cornet writing, but they can sound thin in loud tutti passages.
• Throat and backbore: these control resistance and how much sound you get for your effort. If everything feels too free-blowing, the tone spreads and stamina suffers; if it feels stuffy, you will tire quickly trying to push through it.

Resistance is not the enemy. A little back pressure gives you something to blow against and often steadies both tone and intonation.

Match the mouthpiece to your chair

Think about your role in the band rather than copying someone else's setup. What works for a principal cornet may be a poor choice on the back row.

• Soprano cornet: small and relatively shallow, built for brilliance and security above the stave.
• Solo and repiano cornets: medium cups; solo cornet can take a slightly fuller setup for a rounder sound, while repiano often favours something that blends easily.
• 2nd and 3rd cornets: often a slightly smaller or shallower option for blend and stamina through long, busy parts.
• Flugel: a deep, often V-shaped cup and a generous rim to produce that velvet, vocal quality.
• Tenor horn: deep enough for warmth, but small enough to keep control, because so much of the writing sits high.
• Baritone and euphonium: deep, generous cups for a broad sound, with the baritone a touch smaller than the euphonium.
• Trombones: tenor trombone needs clarity and easy slide coordination; bass trombone needs a big, deep cup for a rich low register.
• Eb and BBb basses: large rims and deep cups for weight and warmth, with enough rim width to cope with long sustained passages.

Try before you buy: a practical routine

Never commit on the strength of a five-minute blow in a shop cubicle.

• Borrow two or three candidates from band colleagues or a repairer, and keep notes on each.
• Use your own instrument and your own band music, not a test piece you have never seen.
• Play in the room where you normally rehearse, sitting where you normally sit.
• Test slowly and systematically: a hymn tune for tone and tuning, lip slurs for flexibility, a low sustained note for richness, a loud passage for headroom, and quiet entries for control.
• Play for at least fifteen to twenty minutes, so that fatigue shows itself. The best mouthpiece is often the one that still feels manageable at the end of rehearsal.
• Ask your musical director and experienced players in your section to listen from the front, because your ears are unreliable that close to the instrument.
• Change only one thing at a time, and give each option a fair hearing.

Comfort, endurance and knowing when to change

Warning signs that your mouthpiece deserves a review include pain or a deep ring mark after playing, tiredness before the interval, a high register that is consistently sharp or flat, a sound that refuses to blend with the section, and difficulty producing the volume the band needs. If several of those sound familiar, it is worth exploring alternatives.

Be careful, though, about chasing symptoms. Endurance problems often come from too much pressure, tension or inefficient breathing, and a lesson or two may be worth more than a new mouthpiece. If you do decide to change, do it out of season rather than the week before a contest, give yourself several weeks to adapt, and keep your old mouthpiece in the case as a reliable fallback. Clean your mouthpieces regularly, and replace any that have a badly worn rim or plating.

Seek advice, try plenty, and choose the one that lets you play your part comfortably and sound like your section. That is what a good mouthpiece is for.