B Flat Mixolydian Scale Trumpet Fingerings: Play Over Bb7

The b flat mixolydian scale trumpet fingerings below give you a playable octave and a short phrase for written Bb7. Start with Bb–C–D–Eb–F–G–Ab–Bb, then listen for the Ab: it supplies the dominant-seventh color.

Everything here uses written notes for B-flat trumpet, not concert pitch. Written Bb Mixolydian sounds as concert Ab Mixolydian. Therefore, use a concert Ab7 backing chord when playing these written notes.

b flat mixolydian scale trumpet fingerings: the chart

Begin on written Bb3, just below middle C, and finish on Bb4, on the staff’s third line. This keeps the exercise away from the upper register, so you can concentrate on clean changes.

Valve numbers mean which valves to press together. 0 means open, with no valves pressed.

| Written note | Scale degree | Valves | |---|---|---| | Bb3 | 1, root | 1 | | C4 | 2 | 0 | | D4 | 3 | 1–3 | | Eb4 | 4 | 2–3 | | F4 | 5 | 1 | | G4 | 6 | 0 | | Ab4 | b7 | 2–3 | | Bb4 | 8, root | 1 |

Play upward, then reverse the notes: Bb4–Ab4–G4–F4–Eb4–D4–C4–Bb3.

Notice that Eb4 and Ab4 share valves 2–3. However, they sit on different partials, so fingering alone cannot select the correct note. Hear each pitch before playing it.

For more help reading valve combinations, keep the practical trumpet fingering guide nearby.

Hear what makes this a dominant scale

Mixolydian follows the formula 1–2–3–4–5–6–b7. Written Bb major contains A natural; written Bb Mixolydian replaces it with Ab. All the other notes remain unchanged.

The written Bb7 chord tones are Bb–D–F–Ab. D establishes the major third, while Ab supplies the minor seventh. Together, those two notes make the dominant harmony easier to recognize.

First, play Bb3–D4–F4–Ab4 as slow quarter notes. Then return through F4–D4–Bb3. Let the final Bb ring, and notice how settled it sounds after Ab.

Listen to Lee Morgan’s trumpet on “Moanin’” from Art Blakey and the Jazz Messengers’ album Moanin’. Focus on his attacks, space, and rhythmic placement. The exercises here are original drills, not transcriptions of Morgan’s solo.

Make the valve changes sound connected

When practising b flat mixolydian scale trumpet fingerings, give extra attention to D4–Eb4. The third valve stays down while the first valve rises and the second valve falls. Uneven timing can produce an unwanted pitch between the notes.

Loop C4–D4–Eb4–D4, using 0–1–3–2–3–1–3 as successive valve combinations: open, first-plus-third, second-plus-third, first-plus-third. Play slowly enough that every arrival sounds deliberate.

Low D with valves 1–3 often runs sharp. If your trumpet has a movable third-valve slide, extend it as needed and check against a tuner. Avoid forcing the pitch down with lip pressure alone.

Next, slur G4–Ab4–Bb4–Ab4. Keep the airflow steady as you move from open to 2–3. If Ab cracks or feels pinched, soften the attack and reduce the volume before trying again.

A five-minute practice routine

Set your metronome to 60 beats per minute. Use a comfortable mezzo-piano sound, and rest whenever the response becomes strained.

1. Minute one: Play the ascending scale in quarter notes. Hold the upper Bb for four beats, then rest for four beats. 2. Minute two: Descend in quarter notes. Listen especially for Ab rather than A natural. 3. Minute three: Play Bb3–D4–F4–Ab4, one note per beat. Rest for a bar, then repeat. 4. Minute four: Play the two-bar phrase below. Keep its quarter notes even before trying a swung variation. 5. Minute five: Invent a two-bar answer using Bb, D, F, and Ab. Leave at least two beats of silence.

Bar 1: Bb3 quarter note, D4 quarter note, F4 quarter note, Ab4 quarter note. Bar 2: G4 quarter note, F4 quarter note, D4 half note.

Ending on D highlights the third of Bb7. Then try ending on Bb instead and compare the stronger sense of arrival.

For a second dominant-scale workout, use the C Mixolydian fingering drills. The formula stays the same, but the valve patterns change.

Turn the scale into your next phrase

These b flat mixolydian scale trumpet fingerings become useful when you can choose a destination, not just complete an octave. Aim for D or Ab, leave space, and listen to the backing harmony.

Open B-flat Mixolydian in JazzValve. Play Bb–C–D–Eb–F–G–Ab–Bb ascending and descending, then repeat Bb–D–F–Ab until the dominant sound is easy to hear.