Trombone Slide Positions: Find Notes With Your Ear and Hand
A trombone’s seven slide positions are seven tube lengths, and each length can sound a whole column of notes, chosen by the lips rather than the arm. That is why a slide chart lists several notes for every position and two positions for many notes. The chart tells you which position to aim for, and your ear decides exactly where the slide stops, because some notes sit sharp or flat of the spot the number suggests.
Why One Position Holds a Column of Notes
A brass instrument’s air column resonates easily at some frequencies and not at others, and the player chooses which of those resonances sets the pitch, as the University of New South Wales physics department’s guide to brass acoustics explains. On a trombone those resonances are called partials. With the slide closed, in first position, the notes run B-flat, F, B-flat, D, F, A-flat and B-flat going up, though that A-flat is too flat to use. They follow the harmonic series, the pattern of frequencies two, three, four and more times a low B-flat. Changing the buzz of the lips in the mouthpiece moves the note up or down a partial without the slide moving at all.
Pushing the slide out lengthens the tube, and every partial in the column drops by a half step, the distance between neighboring piano keys, for each position. Second position holds A, E, A, D-flat, E, G and A. Seventh holds E, B, E, A-flat, B, D and E. The arm picks the column and the lips pick the row.
Swipe sideways to see the whole diagram.
The bottom row is the second partial, because the first is the pedal tone, a separate very low note. The note names carry octave numbers: middle C is C4, F3 is the F on the fourth line of the bass staff, and B-flat 2 is the B-flat on its second line. A trombone part in bass clef is written at concert pitch, so these names match a piano’s.
The shaded cells are the range Arlington Public Schools sets as its beginning-level trombone outcome in its band curriculum, a level that spans a student’s first two years of playing: F below the staff up to middle C, played consistently. That is one district’s benchmark. Every half step in it appears at least once across the seven positions, and seven of them appear twice.
The Notes a Beginner Meets First
The B-flat major scale from the second line of the bass staff is a good map of the slide, because it uses five of the seven positions and three partials in eight notes.
Swipe sideways to see the whole diagram.
The positions run 1, 6, 4, 3, 1, 4, 2, 1. Read against the chart, the scale makes two kinds of move. From C up to F the lips stay on the third partial and the slide walks in, one position per half step or two per whole step. From B-flat to C, and again from F to G, the note goes up while the slide goes out, because the lips jump up a partial at the same moment the arm moves. Those two changes are where a beginner’s scale tends to break, since the arm and the lips both have to land together.
The second note is also the longest reach on the scale, sixth position, straight after first, where the slide is closed. A child whose arm cannot yet reach sixth comfortably will feel it on the second note of the first scale they learn. Our guide to whether trombone is hard to learn covers how schools handle that reach.
Two habits keep the scale clean. Brian Weidner’s open textbook Brass Techniques and Pedagogy says the wrist leads the slide, and that slide movement should always be quick, so the pitch does not smear between notes into a glissando, a continuous slide in pitch. Deb Scott, professor of trombone at Stephen F. Austin State University, adds in her Pocket Guide to Teaching Trombone that a trombone has no true slur, the tongue-free change between notes other wind players use, so a light tongue on a soft “du” starts each note while the slide moves. If the bass clef note names are still new, our guide to reading sheet music as a beginner has the lines and spaces.
Why the Chart Alone Will Not Put You in Tune
A chart with seven numbers suggests seven fixed spots. Scott puts the working count at 41 or more, because the partials do not all land where an evenly tuned keyboard puts the same note, and the slide makes up the difference.
Her adjustments go row by row through the chart. Notes on the seventh partial sit so flat that they are played in shortened positions, slightly in from the number, and the A-flat on the seventh partial in first position is too flat to use, so A-flat above middle C is played in third. Notes on the sixth partial, the F, E, E-flat and D just above middle C in first through fourth positions, sit sharp and want a position roughly half an inch longer. Notes on the fifth partial, the D, D-flat, C and B around middle C, want a position about a quarter inch shorter, though she notes that some models need them slightly longer instead. The third partial is close enough that she calls adjusting it unnecessary.
Fourth position has a problem of its own. Many beginners are taught to line the top of the slide up with the bell, and Scott writes that this leaves fourth regularly sharp, because the true position is slightly past the bell. She names the outer notes to check against a tuner most often: G-flat in the top space of the staff in fifth, low C in sixth and low B in seventh. All three sit in the beginning range shaded on the chart.
Bass trombonist Douglas Yeo’s slide chart page says the best chart is the one a player finds in their own ear, by trial and error.
Same Note, Two Positions
Many notes on the chart live in more than one position. The three outlined are the ones Scott lists to learn first: F on the fourth line, in first or sixth; B-flat at the top of the staff, in first or short fifth; and the D just above middle C, in first or long fourth. Short means slightly in from the standard spot and long means slightly out, and Micah Everett’s slide position chart at the University of Mississippi lists the same pairs.
The reason to use them is slide travel. Scott’s rules are that half steps go in adjacent positions wherever possible and that the more notes played with the slide moving in one direction, the better.
Swipe sideways to see the whole diagram.
In the first phrase, G to F to G in first position means two trips of three positions each. With F in sixth, each trip is two positions and the slide never comes all the way in. In the second, E-flat to D to E-flat in first position sends the slide in and back out across two positions; long fourth puts D one position from E-flat, a half step played in adjacent positions.
Scott writes that alternate positions cost a slightly inferior sound and should not be used for prominent notes, so a long, exposed F in a solo stays in first. She also says they should be taught early, so a player does not cling to the familiar positions.
A Slow Routine That Teaches the Arm by Ear
The routine below fits inside 15 to 20 minutes a day, five or six days a week. Our practice routine for adult learners shows how a warm-up and a technique block share a session that size.
1. Tune with the slide closed. Scott tunes the main tuning slide, the U-shaped tube behind the bell that sets the overall pitch, to the B-flat at the top of the staff in first position, and lets beginners tune to the F on the fourth line instead. Against a tuner, pull that slide out if the note is sharp and push it in if it is flat.
2. Play lip slurs, moving between partials with the lips alone, in one position. With the slide in first, play B-flat 2, F3, B-flat 3, F3 and B-flat 2 as slow half notes without moving the slide. Then do the same shape in second, A2, E3, A3, E3, A2, and so on out to seventh. Each pass plays one column of the chart, by ear, with the arm still.
3. Match a drone, one steady held pitch. Set a tuning app or keyboard to sound F3 steadily and play F3 in first position against it. When the two pitches are close but not equal, the sound wobbles, and the number of beats per second equals the difference in frequency between them, so the wobble slows as you get closer and stops when you arrive. Then play the same F in sixth against the same drone and find where the wobble stops there.
4. Check the outer three. With a tuner, hold G-flat 3 in fifth, C3 in sixth and B2 in seventh, and remember where each one actually lands on your instrument, not where the chart’s spacing suggests.
5. Play the scale in half notes. Use the positions above, make every slide move late and fast, and tongue every note with “du”.
In a lesson this routine also gives a teacher something to listen to. A tuner shows a needle on the center line whether the slide is in the right spot or the lips are bending a note toward it. Scott calls that bending lipping and notes that it gets the pitch with only an okay tone, while the exact slide spot improves both. A teacher can often hear the difference over a call. With the call app’s noise suppression turned off, a drone on the student’s own device comes through with the note.
Sophie P., who teaches trumpet, trombone and euphonium on Tunelark, has performed with the Oakland and Modesto symphonies and at the SF Jazz Center, and works as a brass player and a singer. One parent’s review describes a daughter who started trombone with her the summer before middle school and was playing in her middle school jazz band by seventh grade. If your child is also in a school band, our guide to private lessons alongside school band covers what a private teacher adds.
How to Find a Trombone Teacher on Tunelark
Every Tunelark teacher is vetted by working musicians and educators for teaching quality before they can list. Each teacher sets their own rate and shows it on their profile, and Tunelark handles scheduling, billing and support.
- Open the teacher list at tunelark.com/find-a-teacher and filter by instrument, then read the bios for trombone or low brass.
- Choose a lesson length of 30, 45 or 60 minutes.
- Book a trial lesson. The first lesson with a new teacher is that teacher’s rate minus $25, for whatever length you choose, so trials start at $14.
- Bring the slide chart from your method book and ask the teacher to listen to your fourth position against a drone.
Frequently Asked Questions
What is a pedal tone on the trombone?
It is the very low note below the second partial in each position, B-flat 1 in first, an octave below the B-flat on the second line of the staff. Beginning band parts rarely use it: the Arlington beginning range shaded on the chart stops at F2.
Do I need an F attachment to play every position?
No. The straight instrument plays everything from E2 in seventh upward. The F attachment, a valve worked by the left thumb and often called the trigger, adds four notes below that E and gives easier positions for some low notes: Scott lists C3 slightly out in first with the trigger instead of sixth, and B2 in long second instead of seventh.
Does a bass trombone use the same slide positions?
With no valve pressed, yes, the seven positions are the same. Bass trombones add one or two valves that lower the whole series, and Everett’s chart marks separate positions for each valve combination. Those take over in the low register, where a tenor would need seventh or could not play the note at all.
Do slide positions change as a child grows?
The spots on the slide stay put, but the reach to them changes, so a position a child learned by feel has to be relearned as the arm lengthens. Scott’s guide reminds band directors that young players are still growing, arms included, and tells them to check positions against a tuner often.
How do I know if I am lipping instead of moving the slide?
Hold a note against a drone, then keep the lips still and blow straight. If the pitch drifts away from the drone, the lips were holding it there. Move the slide until the note sits on the drone again without help from the lips.
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About Jennifer Heath
I'm Jennifer Heath, VP of Operations at Tunelark and a lifelong singer. I joined the company in 2020 and oversee much of what makes Tunelark work for students and teachers: hiring, training and supporting our instructors, student support, marketing and day-to-day operations. I started voice lessons at 7 and sang with touring choirs through my teens. Music belongs in every life, for the self-expression, the discipline, the comfort and the simple joy of it.
