Scale guide
Bb Locrian - The Locrian Scale
In one sentence: Minor with minor 2nd and diminished 5th. The warm dark scale with 2 flats. Evokes sophisticated half-diminished tension and modal jazz mystery. Wayne Shorter, Miles Davis, Herbie Hancock master it. Advanced Intermediate.
📊 TECHNICAL SHEET
Level: Advanced Intermediate
Alterations: 2 flats
Key: Bb_locrian
Formula
- Intervals: S-T-T-T-S-T-T (Major Mode VII)
- Type: Locrian Modal (half-diminished jazz)
- Tonic: Bb
- Characteristics: Minor 2nd + diminished 5th = "the two dark claws"
Notes
Locrian Scale: 7 notes with minor 2nd (Cb/B natural) and diminished 5th, from Bb.
Fingering - RH
| Direction | 1 octave | 2 octaves |
|---|---|---|
| Asc | 1-2-1-2-3-1-2-3 | 1-2-1-2-3-1-2-1-2-1-2-3-1-2-3 |
| Desc | 3-2-1-3-2-1-2-1 | 3-2-1-3-2-1-2-1-3-2-1-3-2-1-2 |
Fingering - LH
| Direction | 1 octave | 2 octaves |
|---|---|---|
| Asc | 3-2-1-3-2-1-2-1 | 3-2-1-3-2-1-2-1-3-2-1-3-2-1-2 |
| Desc | 1-2-3-1-2-3-2-3 | 1-2-3-1-2-3-2-3-1-2-3-1-2-3-2 |
🎼 CHORDS AND PROGRESSIONS
i chord: i7b5 (half-diminished) = "maximum tension"
Characteristic progressions:
- Half-Diminished Oscillation: i7b5 ↔ IImaj7 repeated
- Complete Movement: i7b5 → V(b5) → i7b5
- Classic Modal Jazz: i7b5 as tense preparation
🎵 HOW TO PLAY
Essence: The Half-Diminished Tension
Bb Locrian is the scale of "warm dark". The two claws (minor 2nd + diminished 5th) create unique sophisticated tension.
Exercise 1: Compare with natural minor to hear the tension difference.
Exercise 2: Locrian rhythmic pattern: oscillation between i7b5 and IImaj7.
Exercise 3: Dark modal jazz improvisation.
🏛️ HISTORICAL CONTEXT
Wayne Shorter, Miles Davis, Herbie Hancock, John Coltrane have explored Locrian in modal jazz, in moments of sophisticated tension.
This scale is fundamental in classic modal jazz, in contemporary composition.
⚠️ COMMON MISTAKES
| ❌ Mistake | ✅ Correction |
|---|---|
| Confusing Locrian with natural minor | Locrian has minor 2nd + diminished 5th (two claws) |
| Ignoring the tension of diminished 5th | The diminished 5th is critical. Emphasize its character |
| Inconsistent fingering | Practice slowly |
| Playing without jazz sophistication | Locrian is jazz. Seek swing, not speed |
🔄 SCALE COMPARISON
Locrian vs Natural Minor vs Phrygian: key difference is the diminished 5th.
📈 LEARNING PROGRESSION
Week 1: Construction, fingering, listening to the two claws. Week 2: Half-diminished chords, progressions, modal jazz improvisation.
✅ MASTERY CHECKLIST
- I know the 7 notes
- I can play ascending/descending at ♩=120
- I recognize the i7b5 chord (half-diminished)
- I identify: Locrian vs natural minor
- I can improvise modal jazz
- I have practiced at least 10 days
- I feel the "warm dark" character
- I can finger 2 octaves without errors
🌟 FINAL PERSPECTIVE
Bb Locrian is the scale of "warm dark and sophisticated". With minor 2nd and diminished 5th (the two claws), it's as if the scale says: "I am intelligent tension", "I am the half-diminished mystery".
This scale appears in modal jazz, in contemporary composition, in moments of dark sophistication. Composers discovered that Locrian is perfect for creating "refined harmonic tension".
The key is in the two claws. Together they create unique tension.
Your goal: Master Bb Locrian and you'll understand how modal jazz creates dark sophistication. On piano, that's harmonic intelligence.