Scales · September 12, 2026
By Justin Comstock · JazzValve creator, longtime guitarist and adult trumpet learner · Updated October 21, 2026
G Jazz Melodic Minor Scale: Trumpet Fingerings and Practice
Learn written G jazz melodic minor on B-flat trumpet with a one-octave fingering chart, ascending and descending notes, and short jazz practice drills.
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Get Blue Lines freeG jazz melodic minor scale trumpet fingerings for B-flat trumpet are open–1+2–1–open–1–open–2–open for written G–A–B♭–C–D–E–F♯–G, from G4 to G5. In jazz, however, use the same notes descending: keep E and F♯ rather than lowering them to E♭ and F.
Written pitch and the jazz form
Everything here uses written B-flat trumpet pitches, not concert pitches. Written G sounds concert F, so this exercise produces concert F melodic minor. If a concert-pitch chart calls for G melodic minor, a B-flat trumpet player needs written A melodic minor instead.
The melodic minor formula is 1–2–♭3–4–5–6–7. Think of G major with just one change: lower B to B♭. That gives you a minor third while keeping the major sixth, E, and major seventh, F♯.
The traditional classical exercise usually raises the sixth and seventh ascending, then lowers them descending. The jazz form stays the same in both directions. For this lesson, do not switch to G natural minor on the way down.
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G jazz melodic minor scale trumpet fingerings: one-octave chart
Start on written G4, the G on the second line of the treble staff, and finish on G5, just above the staff. “Open” means no valves pressed; valve 1 is closest to your mouthpiece.
| Written note | Staff location | Fingering |
|---|---|---|
| G4 | Second line | Open |
| A4 | Second space | 1+2 |
| B♭4 | Third line | 1 |
| C5 | Third space | Open |
| D5 | Fourth line | 1 |
| E5 | Fourth space | Open |
| F♯5 | Fifth line | 2 |
| G5 | Space just above the staff | Open |
Ascending: G–A–B♭–C–D–E–F♯–G
Descending: G–F♯–E–D–C–B♭–A–G
Fingerings depend on register. The chart’s D5 — 1 and E5 — open apply inside the staff; lower D4 uses 1+3, and lower E4 uses 1+2. Valve combinations alone do not select the octave, so hear the target pitch before playing.
Build an even scale before adding speed
Set a metronome to 60 bpm. Play quarter notes ascending, rest for one measure, then descend. Take a comfortable breath before each direction and aim for an even tone rather than volume.
Isolate these three-note groups:
- A–B♭–C: 1+2 → 1 → open. Release valve 2 cleanly while keeping valve 1 down for B♭.
- D–E–F♯: 1 → open → 2. Keep your fingers close to the valve buttons.
- E–F♯–G: open → 2 → open. Listen for distinct pitches without forcing the upper G.
Play each group four times lightly tongued, then four times slurred. Slurring reveals uneven air or late valve changes. If upper G is not comfortable today, practice G4 through E5 and return; add the final two notes when you can play them without strain.
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Hear what makes it melodic minor
Compare G melodic minor with G Dorian. Both contain G, A, B♭, C, D, and E, but Dorian has F natural while melodic minor has F♯.
Play D–E–F–G, then D–E–F♯–G. In this register, F uses valve 1 and F♯ uses valve 2. Listen to how F♯ leads closely into G.
Next, outline G–B♭–D–F♯: open–1–1–2. These notes form a written G minor-major seventh chord, a useful sound for a tonic minor setting. Over a written Gm7 chord, F♯ may clash with the chord’s F natural, so do not treat melodic minor as an automatic replacement for Dorian.
A short jazz practice routine
Open the G melodic minor practice screen, then spend five minutes on three tasks:
- Two minutes: play the scale up and down in quarter notes, keeping E and F♯ in both directions.
- Two minutes: play eighth-note groups: G–A–B♭–C, A–B♭–C–D, B♭–C–D–E, C–D–E–F♯. Rest between groups.
- One minute: improvise two-bar phrases using G, B♭, E, and F♯. Resolve F♯ to G and leave space after each phrase.
For a contrasting minor sound, revisit the G blues scale drill. Keep the two note sets separate at first so you can hear their different colors.
Where to go next
- G Dorian Scale Trumpet Fingerings and Minor-Chord Practice
- D Jazz Melodic Minor Scale: Trumpet Fingerings and Practice
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Free trumpet workbook
Blue Lines
Thirty days of focused B♭ trumpet practice: tone, time, jazz language and improvisation.
Email signup required
Get Blue Lines freeSources
- J. B. Arban, Complete Conservatory Method for Trumpet.
- Jamey Aebersold, Jazz Handbook: Scale Syllabus.