Trombone Slide Position Chart - All 7 Positions on the Staff

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Why the trombone has positions, not keys

The trombone changes pitch by changing the length of its tubing. Pull the slide out and the tube gets longer, so the note gets lower. Push it in and the note gets higher. There are seven standard positions, numbered from the slide fully in to the slide fully out. Every note on the trombone is one of these positions combined with a lip setting, because brass instruments produce a whole series of notes from each tube length.

This chart shows all seven positions and the notes each one gives. Pick a note and the tool tells you its position and draws the slide. Pick a position and it lists every note in that position. The positions are the foundation of trombone playing, and learning them as a map, rather than one note at a time, makes every new piece easier.

The seven positions

First position, slide fully in, gives Bb as its fundamental, with F, C, G and D above it in the harmonic series. Second position lowers everything by a semitone: A, E, B, F# and C#. Third position gives Ab, Eb, Bb, F and C. Fourth gives G, D, A, E and B. Fifth gives Gb, Db, Ab, Eb and Bb. Sixth gives F, C, G, D and A. Seventh, slide fully out, gives E, B, F#, C# and G#.

Notice the pattern: each position is a semitone lower than the one before it. The fundamentals walk down the chromatic scale from Bb to E. Once you know the fundamental of each position, you can work out the rest, because the harmonic series above each fundamental follows the same intervals. The chart lists them all so you do not have to work them out under pressure.

How the harmonic series works

A brass player produces different notes on the same tube length by changing lip tension and air speed. The lowest note is the fundamental, then come the octave, the fifth, the second octave, and so on. On the trombone, the useful notes in each position are the fundamental and the next four partials. That is why first position gives five notes, not one, and why the same note name can appear in more than one position at different octaves.

Beginners should start with the fundamentals and the first few partials in each position, then extend upward as their embouchure strengthens. The highest partials in the chart need strong, controlled air, and forcing them early builds bad habits. Play the notes you can produce cleanly, and let the range grow gradually.

Learning the positions by feel

Positions are distances, and your arm learns them like a singer learns intervals. First position is against the bumper, fully in. Seventh is fully out, as far as your arm comfortably reaches. The middle positions are spaced roughly evenly between them. Practise moving between adjacent positions slowly, watching a tuner, until each position lands in tune without looking. Then practise jumps: first to fourth, second to sixth, third to seventh.

Use reference points on your own body. Many players judge fourth position against the bell, and seventh by full arm extension. Your instrument and your arm length set the exact distances, so trust the tuner over any measurement. The goal is positions that land in tune every time, not positions that match a ruler.

Alternate positions

Some notes can be played in more than one position, and choosing well makes fast passages playable. The classic example is a note that appears as a high partial in a short position and as a lower partial in a longer one. The longer position usually sounds fuller, while the shorter one moves faster. In a fast run, the shorter position often wins even if the tone is slightly less full.

Learn the primary positions in this chart first, then add alternates one at a time for passages that actually need them. Your teacher or section leader can suggest the alternates that work in your ensemble, because the best choice often depends on what comes before and after the note.

Common mistakes

Playing by eye instead of by ear, so positions drift sharp or flat.
Moving the slide with the whole arm instead of letting the wrist and fingers guide it.
Gripping the slide so tightly that it sticks and jerks.
Forgetting that each position gives several notes, and learning only the fundamental.
Forcing high partials before the embouchure is ready, which builds tension.

How to practise with this chart

Play the fundamentals of all seven positions in order, then back down, listening for even tone and tuning. Then play the full series in first position, then in fourth, then in the others. Add scales that stay in one position, then scales that move through several, such as Bb major across the positions. Use the chart to check any note you are unsure of, and play it ten times in context before moving on. Positions learned this way become automatic, and automatic positions free your attention for music.

Trombone Slide Position Chart – All 7 Positions on the Staff