Concert B flat tuning note
The concert B flat tuning note B-flat4 is 466.16 Hz when A4 is 440 Hz. With A4 at 442 Hz it becomes 468.28 Hz. Concert pitch names the sound heard, rather than the note a transposing instrument reads.
Concert B-flat frequencies
The concert B flat tuning note B-flat4 is 466.16 Hz when A4 is 440 Hz.
| A4 reference (Hz) | B-flat4 (Hz) | B-flat3 (Hz) |
|---|---|---|
| 440 | 466.16 | 233.08 |
| 441 | 467.22 | 233.61 |
| 442 | 468.28 | 234.14 |
| 443 | 469.34 | 234.67 |
Michigan Technological University · Musical Note Frequencies
How to use it
- Confirm the A reference with your conductor or group.
- Enter the B-flat frequency for that reference from the table.
- Press Play at low volume and sustain a matching note.
- Use ÷2 for the lower octave and Stop when finished.
Help and explanations
This page opens a sine-wave generator at 466.16 Hz. For a different band reference, enter the value from the table. If the pitch is too high for a comfortable sustained note, divide the frequency by two for B-flat3; it keeps the note name one octave lower.
Which written note should I play?
A B-flat trumpet, clarinet or soprano saxophone uses written C to match concert B-flat in the appropriate register. An E-flat alto saxophone uses written G. Tenor saxophone also has an octave offset, so match the comfortable register your ensemble chooses.
A piano, flute or concert-pitch low-brass part reads B-flat itself. Instrument key, clef and local notation practice matter: a euphonium part in transposing treble clef is different from a concert-pitch bass-clef part. Check the actual score rather than the instrument’s name alone.
Listening together
Listen for beats between the reference and your sustained sound. Adjust gradually, and check again after warming up. The generator supplies a reference; it does not listen to the instrument or display cents. Use the corresponding tuner for a measured reading.
All values in the table use equal temperament. Agree on the same A reference before comparing instruments. A lower octave may be easier to hear in the room, and headphones can keep the reference from disturbing a rehearsal.
Tips
- Start quietly and use only enough volume to compare.
- Warm up the instrument before a final adjustment.
- Changing the generator’s Hz field sets an exact tone; it does not retune a piano.
Frequently asked questions
What is concert B flat?
It is the sounding pitch B-flat. Transposing instruments may read a different note to produce it.
Concert B flat tuning note
B-flat4 is 466.16 Hz at A4=440; B-flat3 is 233.08 Hz.
What key is B flat major?
Its key signature has two flats, B-flat and E-flat. This page supplies a single B-flat tone, not a scale.
Which note does alto sax play for concert B-flat?
Written G, in the octave appropriate to the chosen concert B-flat.
Does the generator measure my tuning?
No. It plays a reference; use a tuner to measure the note you produce.