fuaranScale Mastery
SCALE · ON TRUMPET IN BB

A𝄪 Locrian

Diminished tonic. Rare in practice; theoretical more than functional.

MEIMIDIHumdrum
Choose a root
Meter:Octave per barCrotchets in 4/4Quavers in 4/4Triplets in 4/4
Engraved by Verovio 6.2.0-43f8060 3 5 title A𝄪 Locrian
Engraved by Verovio 6.2.0-43f8060 2 3 4 5 title A𝄪 Locrian
Verovio
Tempo120 bpm

Playback sounds a major 2nd below the written notation — the instrument's concert (sounding) pitch.

Audio source: tonejs-instruments by Nick Brosowsky (MIT)

FingeringFollows the scale as it plays — written pitch, matches the staff
A𝄪123partial 2
Harmonic seriesTube of the tonic fingering — A𝄪 sounds partial 2
partial 1 — B2 (+0¢)1partial 2 — B3 (+0¢)2partial 3 — F♯4 (+2¢)3partial 4 — B4 (+0¢)4partial 5 — D♯5 (-14¢)5partial 6 — F♯5 (+2¢)6partial 7 — A5 (-31¢)7-31¢partial 8 — B5 (+0¢)8partial 9 — C♯6 (+4¢)9partial 10 — D♯6 (-14¢)10
Related scales
Diatonic chord harmonisation
Same scale, other instruments
Same scale, other tonics
Modes built on this tonic
Compare with
Theory reference
Questions
What notes are in the A𝄪 Locrian scale?

The A𝄪 Locrian scale uses the notes A𝄪, B♯, C𝄪, D𝄪, E♯, F𝄪, G𝄪 (one octave; the pattern repeats at higher registers).

What's the Locrian scale formula?

The Locrian scale follows the interval pattern H W W H W W W, where W = whole step (2 semitones) and H = half step (1 semitone). Apply that pattern starting on A𝄪 to get the A𝄪 Locrian scale.

What chords work over A𝄪 Locrian?

Locrian works over m7♭5 (half-diminished) chords — the ii of a minor ii–V–i. Locrian ♮6 is often a better fit.

How do I finger A𝄪 Locrian on Trumpet in Bb?

On brass, scales train embouchure + valve / slide coordination across the partials. Slow practice with a tuner reveals intonation tendencies (e.g., the 5th partial sharp on trumpet).

When would I use the Locrian scale?

Diminished tonic. Rare in practice; theoretical more than functional.