Scales · September 12, 2026
By Justin Comstock · JazzValve creator, longtime guitarist and adult trumpet learner · Updated October 22, 2026
Play written C blues from C4 to C5, check the concert key, and use a two-bar phrase to practise clear attacks and deliberate rests.


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Get Blue Lines freeThe written C blues scale is C–E♭–F–G♭–G–B♭–C. From C4 to C5, its trumpet fingerings are open, 2+3, 1, 2, open, 1, open. The blue note, G♭4, uses valve 2 and leads by a half step to G4.
Every note below is written pitch for B♭ trumpet. On a B♭ trumpet, written C sounds concert B♭. Pair this scale with a concert B♭ blues backing track.
If a bandleader calls concert C blues, you need written D blues instead. Check whether the track names concert pitch or written trumpet pitch before playing.
Here, “blues scale” means the six-note minor blues scale: 1, ♭3, 4, ♭5, 5, ♭7. In written C, that’s C–E♭–F–G♭–G–B♭.
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This chart pairs written C blues on B♭ trumpet with concert B♭ blues. It covers low C through third-space C.
Valve 1 is closest to your mouthpiece; valve 3 is closest to the bell. “Open” means no valves pressed.
| Written note | Staff location | Valves |
|---|---|---|
| C4 | One ledger line below the staff | Open |
| E♭4 | First line, with a flat | 2–3 |
| F4 | First space | 1 |
| G♭4 (enharmonic F♯4) | Second line, with a flat | 2 |
| G4 | Second line | Open |
| B♭4 | Third line, with a flat | 1 |
| C5 | Third space | Open |
G♭4 and F♯4 sound the same and use valve 2 in this register. Written F♯ would sit in the first space with a sharp. The spelling G♭ shows the lowered fifth of C.
E♭4 uses 2–3; G♭4 uses 2. They don’t share a fingering. Low C, G, and upper C do: they’re all open. Your fingers don’t select the pitch alone. Hear the target before you play it.
Open the written C blues scale in JazzValve for a note reference, then name the valves before playing the first pass.
Stay between C4 and C5 first. If the upper C is unreliable, turn around at G4 and add the higher notes later.
Listen closely to G♭4. Going from F4 to G♭4, release valve 1 while pressing valve 2. Going to G4, release valve 2.
Keep your fingers close to the buttons. If the note cracks, slow down and hear the pitch again. More mouthpiece pressure isn’t the assignment.
At first, let G♭ pass toward F or G. You don’t have to park on every color you find.
Alternate one full scale with two passes through F–G♭–G–G♭–F. Keep the pulse unchanged.
Read the note and rhythm transcript below. Staff notation requires JavaScript.
Two-bar C blues phrase Straight initial reading; later swing variations remain in prose. Concert pitches in the transcript are references only; play the written pitches on B-flat trumpet. No audio playback or fixed swing ratio is implied.
Use a slow concert B♭ blues track, or just a metronome. Start around 60–80 bpm in 4/4. Every note below is written trumpet pitch.
Bar 1 uses open → 2–3 → 1. Bar 2 uses open → 1 → 2 → open. If the track swings, match its eighth-note feel.
Repeat the phrase. Then change one thing:
Record one repetition. Listen for the rest at the end of each bar: does the next entrance stay in time? Keep the same two-bar rhythm while changing just one note on the next take.
Over 12 bars, this scale is a starting palette. It doesn’t make every note equally settled over every chord.
Play the two-bar phrase, rest two bars, then answer with the same note collection.
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Give your C blues scale trumpet fingerings two minutes, F–G♭–G one minute, and improvisation two minutes. Listen for clear attacks, steady time, and deliberate rests before increasing speed.
For contrast, play C–E–G, then C–E♭–G. Hear the third change. The C Mixolydian fingering drills give you another way to hear E against a written C7 sound.
Remove G♭ and you have C minor pentatonic: C–E♭–F–G–B♭. Add it back and you get the six-note minor blues scale. Berklee’s blues-scale lesson explains this relationship.
Use the C minor pentatonic fingering lesson if five notes feel easier to phrase with.
For an independent fingering reference, compare the chart with Yamaha’s trumpet fingering guide. Match the note’s octave as well as its name.
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Thirty days of focused B♭ trumpet practice: tone, time, jazz language and improvisation.
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