Overblowing in Sixths and Ninths
The other route into the register
The overtone work above starts from the bottom of the horn and climbs the harmonic series. There is a second route, and for a lot of players it is the faster one: take the fingerings you already use at the top of the standard range and overblow those instead.
Finger any note between written A above the staff and high F♯, then push the voicing up until the note breaks upward. What comes out sits roughly a sixth above what you fingered. Push further and you reach the next available pitch, roughly a ninth above. Those pitches are in the altissimo register — you have arrived there using fingerings your hands already know.
These are usually called artificial harmonics, to distinguish them from the natural overtones produced from low fingerings. Both are the same acoustic phenomenon: you are selecting an upper partial with your voicing rather than opening tone holes. The difference is only where you start.
The interval narrows as you climb
One detail makes this much less mysterious in practice. Starting low in that range, the first overblown pitch sounds a major sixth above the fingering. As you work upward through the range, that interval gradually tightens to a minor sixth. It is a gradual narrowing rather than a fixed rule, so expect to adjust as you go rather than transposing mechanically.
Knowing roughly where a pitch should land matters, because it tells you whether you have hit the note you were aiming for or the one above it.
Why this explains the fingering charts
Some of these overblown notes come out close enough to pitch to use immediately. Most do not — they speak readily but sit noticeably sharp or flat. The fix is to add or remove a key, usually a side or palm key, which shifts where the tube vents and pulls the pitch into line without disturbing the partial you have found.
That is precisely what a published altissimo fingering is: a simple overblown fingering that somebody adjusted until it sat in tune on their instrument. It is why so many altissimo fingerings look like slightly odd versions of upper-register fingerings, and it is why they differ between horns — the adjustment needed depends on the tube it is being made for. It also means you can do this yourself. If a documented fingering almost works on your saxophone, adding or dropping a single key is exactly the right next move.
How to practise it
- Start on a comfortable note in the upper standard range and overblow it. Do not change the fingering at all — only the voicing.
- Aim to get two or three different pitches out of the same fingering. That flexibility is the point of the exercise.
- Work upward through the range one fingering at a time.
- Once several are speaking, string the results together and see how much of a chromatic scale you can assemble in the altissimo register from these simple fingerings alone. Most players can build close to an octave.
- Only then start refining intonation by adding or removing keys.
Do not chase the tuner during this exercise
In general, using a digital tuner is a terrible idea in saxophone practice. At best it should only be used to check whether your instrument is in tune at the start of a session. No place is this truer than in practising the altissimo register on saxophone. The intonation will be poor at first and that is to be expected. While you are learning to produce these notes, aim for the centre of each tone — the point where it feels most stable and sounds fullest — rather than for exact pitch. If you are too concerned about intonation at this stage you will end up trying to bend notes with your jaw instead of finding them with your voicing.
Which route should you use?
Both, ideally, and they reinforce each other. Natural overtones from low fingerings build the widest voicing range and the most control. Overblowing the upper register gets you into altissimo faster and makes better sense of why the fingerings look the way they do. If altissimo G has stalled after a few weeks of overtone work, switching to this approach for a fortnight often breaks the deadlock.
One caveat by instrument. Alto, tenor and baritone can all be extended by an octave or more this way. Soprano is more limited — roughly a sixth of usable extension — which is one reason the soprano altissimo chart covers a shorter range than the others.