Scales · October 22, 2026
By Justin Comstock · JazzValve creator, longtime guitarist and adult trumpet learner · Updated October 22, 2026
Lydian Dominant Scale for Trumpet: Hear the #11 Color
Hear how the Lydian dominant scale changes one note of Mixolydian. Practice written C7#11 phrases and a D-major triad over a C dominant vamp.
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Get Blue Lines freeThe Lydian dominant scale is Mixolydian with a raised fourth. In written C, its notes are C–D–E–F-sharp–G–A–B-flat–C. It gives a dominant-seventh chord a sharp-eleventh color while keeping the natural ninth, perfect fifth and natural thirteenth.
For a first trumpet study, stay on a C7#11 vamp rather than moving through a full tune. Listen to F-sharp against the chord, then make a short phrase that includes it. You do not have to learn every mode of melodic minor before trying this sound.
Change one note from Mixolydian
Compare the two written collections:
- C Mixolydian: C–D–E–F–G–A–B-flat.
- C Lydian dominant: C–D–E–F-sharp–G–A–B-flat.
Only F changes. The formula is 1–2–3–#4–5–6–b7. Robert Hutchinson's jazz-scale table identifies this formula and its relationship to melodic minor.
F-sharp is the raised fourth within an octave. Chord symbols usually call that same pitch class the sharp eleventh, or #11. The label describes the harmony; it does not require every melodic F-sharp to be played more than an octave above C.
The ordinary C7 chord tones, C–E–G–B-flat, all remain in the scale. Play them first. Then play E–F-sharp–G slowly and hear the new note between two familiar chord tones.
For a fuller review of the starting scale, use the C Mixolydian lesson. Here, the useful task is hearing what one raised note changes.
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Lydian dominant is not ordinary Lydian
You may also see the name Lydian flat seven or Lydian b7. Gary Burton's Berklee explanation of jazz scales describes it as Lydian with its seventh lowered.
In C, the distinction is B-flat versus B natural:
- C Lydian: C–D–E–F-sharp–G–A–B.
- C Lydian dominant: C–D–E–F-sharp–G–A–B-flat.
B-flat supplies the dominant seventh. Keeping B natural instead changes the sound and may conflict with a C7 accompaniment. Check the full scale name, not just the word Lydian.
Likewise, C7#11 and C7#5 are not the same chord instruction. Lydian dominant retains G natural, the perfect fifth. Do not raise G to G-sharp just because F is already sharp.
Set up the written and concert pitches
All exercise notes and main chord symbols here are written for B-flat trumpet. A written C7#11 vamp sounds as concert B-flat7#11. A concert-pitch accompanist should use B-flat7#11, not C7#11, for these trumpet notes.
The complete written C Lydian dominant collection sounds as:
Concert B-flat–C–D–E–F–G–A-flat–B-flat.
In particular, written F-sharp sounds concert E, the #11 of B-flat. B-flat trumpet sounds a major second below its written pitch, as documented in UTEP's transposition reference.
Use a sparse backing part at first. An explicitly chosen 7#11 chord gives you a clearer listening test than a busy track whose voicing is unknown. Hutchinson's chord-scale guide pairs dominant #11 with Lydian dominant.
Exercise 1: Hear the color, then release it
Set 4/4 at quarter note = 60. C4 means middle C. This original two-bar phrase stays between written E4 and B-flat4.
Over the C7#11 vamp, play:
- Bar 1: E4 quarter note on beat 1; F-sharp4 quarter note on beat 2; G4 half note on beats 3–4.
- Bar 2: B-flat4 quarter note on beat 1; A4 and G4 as eighth notes on beat 2 and its and; E4 quarter note on beat 3; quarter rest on beat 4.
F-sharp moves up a half step to G in the first bar. The second bar brings out B-flat and returns to E, keeping the dominant identity easy to hear.
Rest for two bars, then play a variation of bar 1: E4 quarter note, F-sharp4 half note, quarter rest. The F-sharp now lasts through beats 2–3 rather than immediately moving to G. Keep bar 2 unchanged.
Compare the two versions. On this deliberately chosen #11 harmony, F-sharp can be a sustained color, not only a passing note you hurry away from. Whether you want that sound in a tune depends on its melody, voicing and phrasing.
Keep the volume comfortable. If an unfamiliar pitch makes you tense up, stop the loop, hear the note separately, and return at a slower tempo.
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Exercise 2: Find a small triad inside the scale
The notes D–F-sharp–A form a D major triad. Over a C bass, those same notes supply 9–#11–13. They give you a compact way to practice the scale's color without playing a complete octave.
The accompaniment stays C7#11 throughout. You are using three melody notes, not telling the band to change to D major.
Play this original phrase:
- Bar 1: E4 quarter note on beat 1; D4 and F-sharp4 as eighth notes on beat 2 and its and; A4 quarter note on beat 3; B-flat4 quarter note on beat 4.
- Bar 2: A4 and G4 as eighth notes on beat 1 and its and; F-sharp4 quarter note on beat 2; E4 half note on beats 3–4.
Read the note and rhythm transcript below. Staff notation requires JavaScript.
Notes, rhythm and playing instructions
- Bar 1: beat 1, chord C7#11, E4 quarter note, sounds D4; beat 2, D4 eighth note, sounds C4; beat 2.5, F-sharp4 eighth note, sounds E4; beat 3, A4 quarter note, sounds G4; beat 4, B-flat4 quarter note, sounds A-flat4.
- Bar 2: beat 1, chord C7#11, A4 eighth note, sounds G4; beat 1.5, G4 eighth note, sounds F4; beat 2, F-sharp4 quarter note, sounds E4; beat 3, E4 half note, sounds D4.
Written for B-flat trumpet over C7#11; concert accompaniment is B-flat7#11. Quarter note = 60. Play even eighths first. Leave two full bars of rest between repetitions; those recovery bars are not part of the two-bar phrase shown.
The phrase begins on C7's third, visits the D-major triad, reaches the flat seventh, and comes back to the third. D4 through B-flat4 is the complete range.
First play the eighth notes evenly so you can check the count. Then try a relaxed swing feel without changing where beats 3 and 4 fall. Leave two full bars of rest between repetitions.
On your next pass, replace the two eighth notes on beat 2 of bar 1 with a quarter rest. Keep A and B-flat in place. Listen to whether the gap makes their entrance clearer. A scale gives you available pitches; it does not require you to fill every beat.
Where melodic minor enters the picture
C Lydian dominant is the fourth mode of G jazz melodic minor:
G–A–B-flat–C–D–E–F-sharp.
Begin that collection on its fourth note, C, and you have the notes used throughout this lesson. In the jazz form, keep the same pitches when descending.
The G jazz melodic minor lesson explores the parent scale. You can use that relationship to find or check notes, but the harmonic center of today's vamp is C. G remains a valid C7 chord tone, but the parent-scale name should not decide every ending. Choose E, G, B-flat or C deliberately, listening to the C harmony underneath.
For a manageable next key, try written F Lydian dominant: F–G–A–B–C–D–E-flat–F. Its parent is C jazz melodic minor. The written F7#11 accompaniment sounds concert E-flat7#11. Check the new raised fourth, B, before reusing the rhythmic ideas.
Decide when the sound belongs
A 7#11 symbol is a useful invitation to investigate Lydian dominant, not a rule that every melody must use all seven notes. A plain dominant chord does not automatically call for #11, and a suspended dominant asks you to consider a different chord structure.
For today's practice, record Exercise 1 twice: once with the short F-sharp and once with the held F-sharp. Then play Exercise 2. Listen for the difference between the sharp-eleventh color and the familiar C7 chord tones underneath it.
If you can recognize that difference without watching the note names, the session has done its job. For a separate set of short foundational exercises, Blue Lines is a free jazz trumpet workbook available with email signup.
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Get Blue Lines freeSources
- Robert Hutchinson, Music Theory for the 21st-Century Classroom, Scales: https://musictheory.pugetsound.edu/mt21c/JazzScales.html
- Robert Hutchinson, Music Theory for the 21st-Century Classroom, How to Determine Chord-Scale Relationships: https://musictheory.pugetsound.edu/mt21c/HowToDetermineChord-ScaleRelationships.html
- Charles Leinberger, UTEP, Instrument Transpositions for Musical Analysis: https://utminers.utep.edu/charlesl/transpose.html
- Gary Burton, Berklee Online, Jazz Scales You Need to Know for Improvisation: https://online.berklee.edu/takenote/jazz-improvisation-10-scales/