Trombone Slide Positions: One Register, Down and Back

Starting on B♭2 in first position, you can read seven targets—including that starting note—on the same partial. From the B♭2 your teacher has already confirmed, read downward: B♭2, A2, A♭2, G2, G♭2, F2, E2. Their primary slide positions are 1 through 7. Coming back reverses that order.

The useful skill is connecting a written pitch, a position number and an intended sound. The numbers are not centimeter marks. You will build that connection here with one register, four main targets and counted rests before the longer outward moves. Keep distant targets as reading work whenever your teacher has not confirmed a comfortable reach.

1. Read concert bass clef on tenor trombone

This lesson uses ordinary concert-pitch bass-clef notation: a written B♭2 means a sounding B♭2. “B♭ tenor trombone” does not mean you should transpose this page as though it were a B♭ trumpet part. Yamaha explains the trombone’s notation convention and notes that other conventions exist. Transposing brass-band treble-clef parts fall outside this lesson's scope. Keep any F attachment disengaged; this map uses the normal B♭ tubing throughout.

Count staff lines and spaces from the bottom. G2 is on the bottom line, A2 is in the first space, and B2 is on the second line; add a flat to that B for B♭2. Below G2, F2 occupies the space under the staff and E2 uses the first ledger line. The Bass Clef & the Grand Staff sheet reviews the staff anchors. You only need its bass-clef reading here.

Find the register before you find a position. B♭2 sits on the second line from the bottom, A2 in the first space, G2 on the bottom line, F2 below it and E2 on the first ledger line below. The figures use concert bass clef throughout. A label such as B♭2 includes both the note name and its octave; the slide-position digits used later are a different kind of information.

The small octave number identifies which B♭ you mean. B♭2 is below middle C, which is C4. Keep that octave in your spoken answer while you learn the map: “B-flat two, first position.” Later figures put position digits underneath the notes; those digits describe the slide choice, not the octave.

Point to each anchor without holding the instrument. Say B♭2, A2, G2, F2, E2, then go backward. When a note falls below the staff, read its actual line or space before guessing a number. If those locations remain uncertain, return to the bass-clef sheet before adding motion.

Point to G2: say ‘G two, fourth position.’ Then cover the name and repeat the answer from the staff.

2. Fix the second partial before mapping positions

Ask your teacher to model B♭2 in first position and confirm that you can reproduce it. A partial is one of the available resonant pitch levels for a given slide setting. Here “second partial” counts the fundamental as partial 1. B♭2 belongs to partial 2 in first position. You are keeping that same partial as the slide changes.

Yamaha’s mechanism guide makes the essential distinction: one position can produce several notes. A first-position digit alone cannot identify which of those sounds you made. For this route, keep returning to the teacher-confirmed starting pitch instead of trying to solve an unexpected high note by changing the slide number.

For example, B♭2 and the B♭3 an octave above it can both use first position. The slide digit is 1 in both cases, but the intended notes are different. Our route starts on B♭2 and follows the second partial only.

One slide number can serve different pitches; only B♭2 belongs to this lesson’s starting register.

Use B♭2 as your listening check: hear your teacher’s model, then match it if assigned. The B♭3 above is a reading comparison only; it is not an instruction to change partial or discover new embouchure settings.

On paper, every target in the map stays on partial 2. In playing, that still needs confirmation by ear. If your sound jumps to another partial, the printed position may be correct while the pitch is wrong. Pause the route and have your teacher restore the starting reference before continuing.

3. Pair positions 1–7 with descending half steps

Within this fixed partial, one position farther out lowers the target by a half step, also called a semitone. Read the entire pairing: 1 is B♭2, 2 is A2, 3 is A♭2, 4 is G2, 5 is G♭2, 6 is F2, and 7 is E2. These are the primary choices used throughout this lesson. Compare the no-attachment row in Weidner’s position chart.

Other position charts may call our A♭2 G♯2, and our G♭2 F♯2. In this map those are enharmonic names for the same target sounds and positions: A♭2/G♯2 uses 3, and G♭2/F♯2 uses 5. We keep the flat spellings on the return trip so you can track the same seven written targets. Compare those names in Yamaha’s position chart.

Read the cards as a lookup list: one number, one pitch in this fixed partial. Their identical widths help you compare labels; they do not represent equal distances along the slide. Moving from card 1 to card 4 means selecting G2, three half steps below B♭2. It does not mean placing your hand at a location measured from this printed diagram.

The Chromatic Scale sheet explains a line built from half steps. Our seven-note route is a short chromatic segment, not a complete octave scale. A2 to A♭2 is a half step even though the letter stays A; F2 to E2 is also a half step even though both notes are natural.

Read the descending score slowly enough to say each complete pitch before its number. The last rest is counted like the other quarter-note events. You can trace the whole line on paper even if your current playing assignment stops at fourth position.

Down through the second partial: B♭2–A2–A♭2–G2–G♭2–F2–E2 maps to 1–2–3–4–5–6–7. Each change is one descending half step. The final quarter rest completes bar 2; it is not an eighth pitch or another position. Count four beats in each bar while pointing through the written targets. The number line describes pitch choices in this register, not measured arm travel.

Now reverse the map. Start with E2 in seventh position, then read F2 in sixth, G♭2 in fifth, G2 in fourth, A♭2 in third, A2 in second and B♭2 in first. The notes rise while the position numbers decrease. Use the written return line to check the accidentals rather than merely reciting seven numbers backward.

Read back inward: E2–F2–G♭2–G2–A♭2–A2–B♭2 maps to 7–6–5–4–3–2–1. The natural signs before G and A matter: each cancels a flat earlier in the same bar. The pitch rises as the position number falls, provided the second partial stays fixed. Compare the first and last notes with the descending line before trying to read either line from memory.

A flat lowers a natural note by a half step. A natural sign restores the unaltered letter-name pitch, canceling a sharp or flat from an earlier accidental or the key signature. The Open Music Theory lesson on half steps and accidentals explains those signs. On the return line, G needs a natural after G♭ in the same bar, and A needs one after A♭. The notes look nearly identical until you read their signs.

These examples have no sharps or flats in the key signature. An accidental normally applies to the same letter and octave through the rest of its bar; a bar line resets it. That is why B♭ is marked again in a later bar. Texas A&M’s accidental examples show the bar-line reset.

A–A♭–A returns through positions 2–3–2; G♭–G returns through 5–4. The A noteheads share a staff space, and the G noteheads share a staff line, but the accidentals change the target pitch and position. Read the sign together with the letter. Here A♭ is below A, and G♭ is below G; a flat does not tell you a direction of slide motion until you compare the two complete targets.

Try three quick written checks: A♭2 needs which position? Which pitch belongs to position 5? Which position follows F2 if the next written pitch is E2? Answers: 3, G♭2, and 7. Explain each answer from the paired map. A correct guess is less useful than being able to locate the relevant target again.

For an accidental check, compare A2 and A♭2 while leaving the notehead’s staff location unchanged. The target changes by one half step and the primary position changes from 2 to 3. Compare G2 and G♭2 next: 4 becomes 5. These pairs show why counting staff lines alone cannot recover all seven chromatic targets.

Then try the same check in reverse: name the pitches for positions 2, 4 and 6, in that order. They are A2, G2 and F2. Those numbers do not describe three adjacent chromatic notes. Looking back at the full map reveals the omitted A♭2 and G♭2, which will matter when the short route skips positions.

4. Use the diagram as an order, not a ruler

The distance from first to second position is not a universal unit that you can repeat along the slide. The outer gaps grow. Brian Weidner’s trombone pedagogy chapter also explains that placement varies with partial and tuning conditions. Treat a position as a tunable region learned through guided motion and listening.

Moving the slide outward lengthens the air path through the instrument, lowering the pitch on the same partial. Equal half steps require equal ratios of length, so the added length grows as you move outward.

This idealized model starts with a total effective length of 1.000 in first position. Six equal-tempered half steps give about 1.414 times that length in seventh position. These are ratios of total effective length, not measurements of slide extension. The drawing shows that pattern only. Real placement is learned on your instrument with a teacher and adjusted by listening; the diagram supplies no measured slide locations or reach instructions.

You do not need a length calculation to practice this map. It explains why evenly spaced boxes can represent evenly spaced pitch steps while failing as a physical diagram. Never measure the cards against your slide. Ask your teacher to show the actual destinations on your instrument and decide which are comfortably available to you.

This also separates two meanings of “right position.” On a worksheet, G2 receives the primary label 4. In a lesson, the teacher listens to whether your actual fourth-position placement gives the target in tune. A printed 4 cannot guarantee the sound by itself. Keep the number and the listening check together.

Mark any teacher-assigned playing limit on your copy; read the remaining targets aloud.

Four separate decisions make one reliable target. Read the written note and accidental, confirm that it belongs to this octave, select its primary position in the supplied map, and compare the sound. If one step is uncertain, return to that step rather than treating the slide number as proof that the note must be right.

Cover the pitch names on the card map and recover them from the descending staff. Then cover the numbers and supply those instead. This checks both directions of the association without asking you to hold the instrument or stretch toward a target. Keep Trombone: One Register, Seven Positions beside you as the printable reference.

5. Read a route using four positions

For the first phrase, use just B♭2, A2, G2 and F2: positions 1, 2, 4 and 6. Read the four long-note targets below and name the missing positions in between. You have skipped 3 and 5, so “move one position for each new note” will not work for this phrase.

The four targets for the route are B♭2 in 1, A2 in 2, G2 in 4 and F2 in 6. Each whole note fills a four-beat bar. This is a reading reference, not a requirement to sustain every note for four beats on your first attempt. Notice the missing positions: the route skips A♭2 in 3 and G♭2 in 5, so its pitch changes are not all half steps.

Read the original four-bar route in three passes. First say each pitch name, and say ‘rest’ at every rest. Next say the position numbers under the sounding notes. Finally count four beats per bar while pointing to each event. The quarter note lasts one beat and the half note two in this 4/4 example.

Original route: bar 1 is B♭2–A2–G2; bar 2 is rest–F2–G2; bar 3 is A2–B♭2; bar 4 is rest–F2–B♭2. Half notes occupy two beats; quarters and quarter rests occupy one. Both sixth-position entries follow a printed rest, and the final return goes from F2 in 6 to B♭2 in 1. Read the destination before moving. This article example is separate from the companion sheet’s four-bar route.

Bar 1 starts on B♭2, then A2, then holds G2 on beats 3–4. Bar 2 begins with silence, places F2 on beat 2, and returns to G2 on beat 3. Bar 3 holds A2 for two beats and B♭2 for two. Bar 4 repeats the rest and F2 entry, then finishes on B♭2.

The largest position-number change in that last bar is 6 to 1. It still lands on the same familiar B♭2, not a new register. Identify the destination before attempting the move with your teacher. If sixth position is reading-only for you, complete the spoken route and let the teacher demonstrate its sounding version.

You can also ask a partner to point to the bars in a different order while you name their opening events. Bar 2 and bar 4 both start with a rest, so the first event is silence, not F2. Bar 3 starts on A2 in second position. This small reading variation checks whether you are following the page rather than replaying a memorized chain.

The One Register, Seven Positions handout pairs the complete descending map with a four-bar route. The handout’s bar 2 starts with a half rest, so F2 enters on beat 3. The article’s bar 2 starts with a quarter rest, so F2 enters on beat 2. Follow the rhythm printed on the page you are using. Keep note recognition and counted entrances as separate checks.

6. Use rests to prepare the next target

A rest specifies silence for a written duration. In these 4/4 examples a quarter rest lasts one beat and a half rest two. The Rest Family sheet pairs each rest with its matching note value. Keep counting during silence, including when it crosses a bar line.

Count all of the silence: B♭2 on beats 1–2, rest on beats 3–4, then another rest on beat 1 of the next bar. F2 enters on beat 2, and G2 begins on beat 3. The bar line does not cancel the second rest. Use the available silence to identify F2 and its sixth-position destination; keep the written entrance even when the slide is ready earlier. Numbers above the staff identify bars; the count row below the rest detail identifies beats. Digits directly under sounding notes are slide positions.

In this detail, the half rest at the end of bar 1 is followed by a quarter rest at the start of bar 2. That makes three consecutive silent beats. F2 does not begin on the new downbeat: it begins on beat 2. Mark that next target “F2, 6” before you play.

The rest-detail score as a beat grid. One half rest plus the following quarter rest gives three consecutive silent beats across the bar line. The target after that silence is F2 in 6, entering on bar 2, beat 2. The shaded preparation window marks time available for identifying the destination; it does not prescribe a hand speed or say exactly when your teacher wants the motion to start.

Try counting the rest detail without any pitch names first: “one, two, three, four; one, two, three, four.” Tap only the sounding onsets: the first beat of bar 1, then beats 2 and 3 of bar 2. Next speak B♭2, F2 and G2 at those same onsets. The final G2 lasts through beat 4; do not tap another entrance just because you are still counting.

The silence gives you time to identify and prepare the destination with teacher guidance. It does not require you to wait until the rest ends before thinking about the next note. Nor should you enter early because the slide is ready. Preparation and sounding entrance have different jobs.

If you are adding a rest to a practice copy of a difficult move, mark the changed rhythm clearly. Do not silently shorten the preceding half note or add an uncounted pause and then assume you played the original rhythm. The Rest Family helps you account for the replacement silence.

The rest remains part of the phrase. Counting it, naming the next target and preparing the destination are different tasks that can share that silent time. Keep the actual entry on its printed beat. When the route becomes confusing, say the next pitch and position aloud in a reading pass before trying the passage on the instrument.

Now read the second route. Its pitches are familiar, but their order has changed. Find every rest first, name the next target and identify its entrance beat. In bar 3 the answer is F2 in sixth position on beat 2; the A2 that follows is in second position.

A second route changes the order without adding pitches: G2–A2, B♭2–rest, rest–F2–A2, then G2–B♭2. The sixth-position entry occurs on beat 2 of bar 3. The later A2 is in position 2 even though the phrase is moving upward. Choose every position from its written pitch; “the next number” works only when the music actually takes the next chromatic step.

Use Slide Route Detective for another written check: supply primary positions, inspect incorrect labels, and mark the next target after a rest. Cover the answer key before starting. For any missed label, return to the pitch on the staff and reconstruct its pairing rather than correcting the digit from memory alone.

The detective sheet’s first section has seven individual targets. Its second section supplies a correctly labeled line A and a line B with exactly two wrong numbers. The third asks for the next pitch and position after rests in both lines. Its upside-down key gives the repairs and a complete corrected line B; the Try it uses teacher checks without a speed score.

7. Compare the target sound with your teacher

Bring one bar and one precise question to the lesson: “I read this as F2 in sixth position, entering on beat 2. Did that sound match?” Your teacher can compare your pitch and octave, check the timing, and observe comfortable motion. Those are three different pieces of evidence.

A successful check has more than a correct digit. Ask the teacher to hear the pitch and octave, follow the counted entry, and observe whether the motion is comfortable. A synthetic reference can support pitch and timing comparison, but it cannot demonstrate your slide action or certify your tone. Reading distant positions accurately remains useful when playing them is not yet appropriate.

Open the audio on Trombone: One Register, Seven Positions and follow that sheet’s printed route. On Slide Route Detective, Reference 1 follows line A, Reference 2 follows line B, and Practice pulse supplies the beat. These recordings do not play the separate article routes. A synthesized example cannot show a slide action, demonstrate your physical setup or certify a successful trombone tone. The companion pitch references use in-house piano sounds at quarter note = 60, so listen for the sequence and rhythm rather than expecting trombone timbre. The teacher supplies the live instrument model. If the reference and your note seem far apart, ask which pitch or partial you actually produced before adjusting anything yourself.

Read the four-bar route below. Exactly two position labels are wrong. Name each written pitch, check its number against the map, and write the corrections before reading the answer.

Check each suspect number against the same question: “Which written pitch is this?” Do not change the note to fit the supplied digit. In this task the staff is the target and the label is what you are checking. That distinction lets you repair an annotation while preserving the original musical phrase.

Two labels in this original article exercise are deliberately incorrect. The pitches and rhythms are unchanged; correct the numbers, then count all four bars.

The repairs are 2 for A2 and 6 for F2. Next, count the whole corrected phrase aloud, then cover the digits and read it again. If you can supply the positions but lose the rest, review timing. If you count accurately but misname B♭2 as B2, review the flat sign. If the paper is correct but the sounding note differs, take that question to the teacher.

Keep a short observation rather than a grade: “Read F2 correctly; entered one beat early” tells you what to revisit. “Bad at sixth position” combines several possible problems and gives you no clear next action. On the next pass, keep the pitch answer and count the preceding rest again. Let the teacher assess the physical motion separately.

Finish by naming the complete descending map once and returning to your confirmed B♭2 reference. Your next goal is a dependable connection among note, octave, position and sound. A Tissimo teacher can check your pitch, timing and comfortable reach in a live lesson; book a lesson to work through one route together.

Free worksheets for this lesson

• Trombone: One Register, Seven Positions — the second-partial map and an original route.
• Slide Route Detective — primary-position labels, wrong-label checks and targets after rests.
• The Bass Clef & the Grand Staff — bass-staff note anchors.
• The Rest Family — note/rest pairs and counted silence.
• The Chromatic Scale — successive half steps and their spelling.

Sources

• How to play the scale — Yamaha
• Trombone position chart — Yamaha
• Trombone Position Chart — Brian N. Weidner
• Trombone notation convention — Yamaha
• The Trombone — Brian N. Weidner, Brass Techniques and Pedagogy
• Reading Clefs — Open Music Theory
• Half Steps, Whole Steps, and Accidentals — Open Music Theory
• Notating Rhythm — Open Music Theory
• The Basics I: Notes and Rests — Texas A&M University Libraries
• The Basics II: Accidentals and Beats — Texas A&M University Libraries