A trombone position chart shows where each of the seven slide positions places the instrument’s harmonic partials and which note names those positions produce on a tenor (B♭) trombone. It’s a practical tool: map partials to positions, mark common alternates, and use it to train fast shifts and clean intonation.
Essential slide-position map: clear 1st–7th positions with partial examples
Below are concert/B♭ examples for the common harmonic partials on a tenor trombone. Each position lowers every partial by roughly one semitone compared with the previous position; exact cents and physical distances vary. Use these as a functional reference while you practice with a drone or tuner.
1st position (closed) — 1st partial: B♭1 (pedal), 2nd: B♭2, 3rd: F3, 4th: B♭3, 5th: D4, 6th: F4.
2nd position (~–1 semitone) — 1st: A1, 2nd: A2, 3rd: E3, 4th: A3, 5th: C♯4/D♭4, 6th: E4.
3rd position (~–2 semitones) — 1st: A♭1, 2nd: A♭2, 3rd: E♭3, 4th: A♭3, 5th: C4, 6th: E♭4.
4th position (~–3 semitones) — 1st: G1, 2nd: G2, 3rd: D3, 4th: G3, 5th: B3, 6th: D4.
5th position (~–4 semitones) — 1st: G♭1/F♯1, 2nd: G♭2, 3rd: D♭3, 4th: G♭3, 5th: A3, 6th: D♭4.
6th position (~–5 semitones) — 1st: F1, 2nd: F2, 3rd: C3, 4th: F3, 5th: A♭3, 6th: C4.
7th position (~–6 semitones) — 1st: E1, 2nd: E2, 3rd: B2, 4th: E3, 5th: G3, 6th: B3.
Use these mappings to check partial tuning: play a drone on the target pitch, then sound the same partial and adjust slide and embouchure until beats disappear.
How slide length relates to pitch: cents, spacing, and why positions aren’t evenly spaced acoustically
Every semitone is a fixed frequency ratio, but the trombone’s tube length changes linearly with slide extension while frequency changes logarithmically. That mismatch makes outer positions need progressively more slide length per semitone.
Practical guides for physical spacing (tenor trombone, full slide): 1st→2nd ≈ 3–4 cm (1.2–1.6 in), 2nd→3rd ≈ 4–4.5 cm (1.6–1.8 in), 3rd→4th ≈ 5–5.5 cm (2.0–2.2 in), 4th→5th ≈ 5.5–6 cm (2.2–2.4 in), 5th→6th ≈ 6–6.5 cm (2.4–2.6 in), 6th→7th ≈ 6.5–7.5 cm (2.6–3.0 in). Full extension usually totals ~30–32 cm (11.8–12.6 in).
In cents, each semitone is 100 cents, but effective cent error per position depends on register and partial: low partials need slightly larger physical shifts, so you’ll feel the outer positions require bigger movement for the same pitch change. Mark and practice the physical spacing rather than relying on equal divisions.
Visual trombone slide chart for practice: printable, pocket, and app-friendly layouts
Design a one-page practice chart for quick reference. Include: a left column with positions (1–7), a middle grid mapping common partials (1st–6th) with note names, and a right column for alternates and trigger/valve notes. Use high-contrast colors and large type for performance lighting.
Printable layout recommendations: single A4/letter page, color-code inner (1–3), middle (4), and outer (5–7) positions; provide treble- and bass-clef variants; add a small ruler graphic showing approximate cm/inch distances from the bell section. Export as PDF for easy printing.
Mobile-friendly layouts: create a zoomable SVG or PNG that keeps the grid readable on small screens. Add toggles for transposition (treble vs bass clef), a tuner/drone link, and a layer that shows trigger positions. Make the chart pinch-zoomable and keep elements large enough for one-handed viewing.
Customization tips: choose sans-serif fonts at 14–18 pt for readability, use color pairs with high contrast (dark text on light background), and increase note-name size for student charts. For choir/band use, produce enlarged posters showing only commonly used partials and alternates.
How slide positions map to concert pitch and transposition for tenor, bass, and alto trombones
Tenor trombone: in bass clef parts the music is written at concert pitch; players read it directly. In treble clef brass-band writing the tenor is a B♭ transposing instrument: the written pitch sounds a major second lower. On a tenor B♭ trombone, written C in treble clef sounds B♭ concert. Mark charts with both written and concert names when you teach across clefs.
Bass trombone: generally pitched in B♭ (like tenor) but with heavier bore and longer bell; range extends lower and the harmonic series shifts the practical positioning of low partials. Mark lower-octave partials and common trigger combinations separately because fingerings that work on tenor may be awkward or unavailable.
Alto trombone: pitched in E♭ (an octave above the bass-clef tenor fundamentals). Alto players read transposition differently; an alto chart should show written + concert pitch for clarity and use smaller physical distances (shorter slide travel in the playable range). Always label clef and transposition on the chart header.
F-attachment and triggers: engaging an F trigger lengthens the instrument, lowering pitch by a perfect fourth (open B♭ section plays as F with the trigger engaged). Practically, many long-slide notes can be moved inward when the trigger is used. Annotate your chart with a trigger column: list the open position and the equivalent shortened position when the trigger is engaged (or show the new note name produced).
Chromatic patterns and scale-specific position charts: major, minor, and common jazz scales
For clean chromatic lines use half positions to minimize extreme jumps. A reliable chromatic position path (ascending) across one octave: 1 → 1½ → 2 → 2½ → 3 → 3½ → 4 → 4½ → 5 → 5½ → 6 → 6½ → 7. Practice this slowly until half positions feel consistent.
Suggested practical position sequences (tenor, middle register):
B♭ major (one octave, middle register): use mostly 1, 1½, 2, 3, and 1 for efficient voice-leading. That keeps the thumb and embouchure stable and uses familiar partials.
F major: favor positions 1–4 with occasional 1½ for C and 2½ for B♭; F major lives comfortably near 1st position partials.
G minor: use 1–3 positions with half positions for chromatics; keep D and E♭ in inner positions to avoid outer jumps.
Blues/jazz scale (B♭ blues): target compact slide paths—use 1, 1½, 2, 3 for the core pentatonic/blues shapes, and favor alternates to keep time and tone consistent.
For ii–V–I patterns in jazz, plan slide movement by voice-leading: aim to keep a common-tone on the trombone partial and move the slide on notes that must change. For example, in B♭: if the line runs C → B♭ (ii → I), prefer positions that allow C and B♭ to sit in 1 or 1½ rather than shifting outer slide rapidly.
Alternate and “cross-slide” positions: tuning options and avoiding slide congestion
Alternates solve tuning and collision problems. Standard useful alternates:
• Play F♯/G♭: commonly in 6th or 1st+trigger; choose 6th when you want inner-slide access for surrounding notes, use trigger when the part requires short slide travel.
• Low B♭ alternatives: use 1st+trigger or 5th/6th depending on register and ensemble context.
Alternates improve intonation and speed. Pick alternates when the section is tight and slide traffic is heavy, or when the partial in one position tends to be naturally sharp or flat. Label alternates clearly on your chart and practice the same finger/slide combinations until you build automatic choice patterns for orchestral and jazz contexts.
Practical slide-distance measuring: markers, tape, and DIY position guides
Easy, reversible marking systems: thin colored tape wrapped once around the outer slide tube, low-profile silicone rings, or removable vinyl dots. Place tape so that it’s visible from the player’s normal grip position; avoid adhesives that leave residue and never tape inner slides. Test any marker to ensure it doesn’t impede movement.
Recommended placement by position (approximate from bell section): 2nd ≈ 3–4 cm, 3rd ≈ 7–8 cm, 4th ≈ 12–13 cm, 5th ≈ 17–19 cm, 6th ≈ 23–25 cm, 7th ≈ 30–32 cm. Measure on your own horn to build consistent muscle memory—don’t assume every horn matches these numbers exactly.
For rentals: use removable silicone rings or a clip-on, or mark a practice chart instead of the instrument. Keep any physical markers low profile and remove them for polishing or repairs.
Using a position chart to train intonation: drones, partial tuning, and cent adjustments
Drill sequence for each position and partial: 1) Set a steady drone on the target concert pitch. 2) Play the matching partial in the listed position. 3) Adjust slide and embouchure until you eliminate beats. 4) Note the cent deviation on a tuner and record it on your chart.
Common tendencies and quick fixes: 3rd position can read sharp on low partials—pull slightly longer and relax jaw. Outer positions often need more extension than you expect; practice slow extensions to the marker and back while singing the target pitch.
Ear-training exercises: sing each target partial before playing it; match sung pitch to drone; practice interval matching between partials (e.g., sing a drone on F, then sing and play the 3rd partial B♭ above and check beats).
Technical drills to build accurate slide placement, speed, and smooth shifts
Daily routine (15–20 minutes): 1) Slow ladder: play a scale using only positions 1–4, moving slowly and stopping at each position for 4 beats. 2) Shift ladder: hold a drone, move between positions 1→4 then 4→1 in eighth-note increments to build precision. 3) Acceleration drill: repeat the same two-position shift (e.g., 4→7) at increasing metronome speeds until smooth.
Hand/slide synchronization: practice with a mirror or phone camera. Keep the elbow loose and the wrist aligned with the slide; stop knee-jerk reaching by practicing micro-shifts (half-slide movements) at slow tempo until smooth.
Work problem pairs (e.g., 4→7, 3→6) in isolation: 30 repetitions slow, 30 medium, 30 fast. Add slurs and articulation once accuracy is established.
Common errors, diagnostic checklist, and quick fixes
Typical problems and fixes:
• Oversliding: symptom—notes arrive late and out of tune. Fix—reduce arm sweep, use tape landmarks, practice short, accurate micro-movements.
• Inconsistent landmarks: symptom—slide feels different every time. Fix—establish visual and tactile markers, practice blind (eyes closed) to trust feel.
• Poor hand form: symptom—wrist collapse and uneven slide speed. Fix—reset grip, keep thumb/first two fingers on brace, elbow relaxed, forearm drives straight motion.
Diagnostic checklist: check tuner and drone first; then examine slide technique; then embouchure; finally instrument problems (crooked tuning slide, dents, stuck valves). If tuning issues persist after technique fixes, schedule a repair tech.
Slide maintenance, temperature, and repair factors that affect position accuracy
Maintenance schedule: daily quick wipe and thin coat of lubricant for playing; weekly thorough clean (slick/brush and water) depending on use; annual full service at a tech for dents and alignment checks. Sticky or loose inner slides change tube length and ruin landmarks.
Temperature: cold metal contracts and makes slides stiffer; your intonation will shift sharp in cold air because the instrument length shortens slightly. Warm up the horn by playing and protecting the slide with gloves in cold weather before relying on long extensions.
When to see a tech: dents that trap water, misalignment that causes uneven resistance, persistent tuning drift after primary maintenance, or leaks that can’t be fixed by basic adjustments.
F-attachment and valve trombone mapping: integrating trigger/valve changes into your chart
Annotate charts with a trigger column showing the lowered pitch when the F trigger is engaged. Practically, put a small checkbox next to notes that are easier with the trigger. For example, low B♭ and low F-family notes often shift to inner positions with the trigger.
For valve trombones: create combined valve+slide cheat-sheets showing common valve combinations and the most efficient slide position. Mark pedal tones and the valve combinations that produce them; add a short practice list for valve+slide switching to reduce hesitation during performance.
Advanced applications: glissandi mapping, microtonal adjustments, and alt techniques for pros
Glissandi: plan the path by listing start and end positions and the intermediate partials to control pitch continuity. Slow glissandi need steady air and even slide speed; fast jazz smears require controlled tonguing and pre-planned micro-slide points to hit target notes.
Microtonality: annotate your chart with cent offsets required in ensemble tuning. For example, low 3rd-position notes often need +10–20 cents; high outer-position notes sometimes need –10–20 cents. Use a tuner for reference, then rely on the ear for performance adjustments.
When arranging: avoid lines that demand repeated extreme 1→7 leaps at tempo. Re-voice parts to keep trombone lines within two or three adjacent positions whenever possible.
Teaching and lesson-plan use of a position chart: progression, assessment, and student handouts
Lesson progression: beginner—learn 1–3 positions and matching 2nd–4th partials; intermediate—add half positions, alt positions and chromatic octave drills; advanced—apply trigger/valve mapping, speed drills, and microtonal control with drones.
Assessment rubric examples: accuracy (percentage of in-tune notes over a drone), speed benchmark (two-octave chromatic in target tempo with ≤2 wrong positions), and consistency (repeat accuracy across three sessions). Use short recorded checkpoints for objective review.
Printable student handouts: one-page position chart, half-position drill sheet, and weekly checklist (15 minutes/day tasks). Give students a small pocket card with 1–7 position landmarks and a short list of alternates.
Ready-to-use downloadable resources and recommended further reading/tools
Include these downloadable items with any position-chart article: a full-chart PDF (A4 and letter), octave-specific mini charts, and tuner/drone WAV files at common practice pitches (B♭, F, C). Also supply a mobile SVG for zoomable viewing.
Recommended resource types: apps with slide-simulator visuals, tuner apps that display cent deviations, high-quality demonstration videos that show hand placement, and teacher-reviewed method books focused on slide accuracy and partial tuning.
Selection advice: pick materials that clearly label clef and transposition, show trigger options, and include teacher endorsements or published method pedigree.
Fast answers to frequent player questions
How many positions are there? There are seven standard slide positions plus countless half positions and micro-positions between them. Use the seven as primary landmarks and half positions for chromatic accuracy.
Why do positions change with register? Partial spacing in the harmonic series changes with frequency; the slide movement required for a semitone differs at low versus high partials. That’s why you’ll use slightly different physical extensions across registers.
When should I use an alternate? Choose an alternate when it improves intonation, shortens slide travel, or avoids collision in ensemble playing. If an alternate keeps you in the inner positions and stays in tune, use it.
Live troubleshooting quick fixes: if out of tune in ensemble, set a drone to the reference pitch and play long tones to re-center your ear; if the slide stiffens before performance, warm it with breath and use a small amount of thin lubricant; if stuck, stop and get a tech—don’t force.
Download the compact printable chart and pocket cheat-sheets from the resource links provided with this guide and use them as daily practice anchors.
