Blues Scale
Notes, charts, and guide for all 12 keys. From Delta blues to hip-hop sampling, the blues scale is the most expressive 6-note scale in Western music.
What is the Blues Scale?
The minor pentatonic scale with one added note: the flat 5, called the blue note. 6 notes total: 1, b3, 4, b5, 5, b7. The flat 5 is what gives blues its characteristic tension and grit.
The Blue Note
The flat 5 (diminished fifth, tritone) sits exactly between the 4th and 5th. It creates maximum harmonic tension. In A blues, it is Eb. Bend it up to E or down to D for authentic blues expression.
Minor vs Major Blues
Minor blues (1, b3, 4, b5, 5, b7) is darker and more intense. Major blues (1, 2, b3, 3, 5, 6) is brighter and sweeter. Many blues players mix both in the same solo for the full blues sound.
Blues Scale Formula
| Scale | Degree 1 | Degree 2 | Degree 3 | Degree 4 | Degree 5 | Degree 6 | Blue Note |
|---|---|---|---|---|---|---|---|
| Minor Blues | 1 (Root) | b3 | 4 | b5 (blue note) | 5 | b7 | Flat 5 / diminished 5th |
| In A | A | C | D | Eb | E | G | Eb is the blue note in A |
| Major Blues | 1 (Root) | 2 | b3 (blue note) | 3 | 5 | 6 | Flat 3 / minor third |
| In C | C | D | Eb | E | G | A | Eb is the blue note in C major blues |
Minor Blues Scale - All 12 Keys
The blue note (flat 5) is highlighted in amber for each key.
| Key | 1 (Root) | b3 | 4 | b5 (blue note) | 5 | b7 |
|---|---|---|---|---|---|---|
| A | A | C | D | Eb | E | G |
| E | E | G | A | Bb | B | D |
| D | D | F | G | Ab | A | C |
| G | G | Bb | C | Db | D | F |
| C | C | Eb | F | Gb | G | Bb |
| B | B | D | E | F | F# | A |
| F | F | Ab | Bb | B | C | Eb |
| F# | F# | A | B | C | C# | E |
| Bb | Bb | Db | Eb | E | F | Ab |
| Eb | Eb | Gb | Ab | A | Bb | Db |
| Ab | Ab | B | Db | D | Eb | Gb |
| Db | Db | E | Gb | G | Ab | B |
Major Blues Scale - All 12 Keys
The blue note (flat 3) is highlighted in amber for each key.
| Key | 1 (Root) | 2 | b3 (blue note) | 3 | 5 | 6 |
|---|---|---|---|---|---|---|
| C | C | D | Eb | E | G | A |
| G | G | A | Bb | B | D | E |
| D | D | E | F | F# | A | B |
| A | A | B | C | C# | E | F# |
| E | E | F# | G | G# | B | C# |
| F | F | G | Ab | A | C | D |
| Bb | Bb | C | Db | D | F | G |
| Eb | Eb | F | Gb | G | Bb | C |
| Ab | Ab | Bb | B | C | Eb | F |
| Db | Db | Eb | E | F | Ab | Bb |
| F# | F# | G# | A | A# | C# | D# |
| B | B | C# | D | D# | F# | G# |
Blues Scale vs Pentatonic vs Natural Minor
| Scale (in A) | Notes | Note Count | Blue Note | Character |
|---|---|---|---|---|
| A Minor Pentatonic | A C D E G | 5 notes | None | Safe, powerful, works everywhere |
| A Minor Blues | A C D Eb E G | 6 notes | Eb (b5) | Expressive, gritty, the blues sound |
| A Natural Minor | A B C D E F G | 7 notes | None | Melodic, full, classical/rock |
The blues scale is pentatonic + one note. That single Eb is what transforms "rock minor pentatonic" into "blues."
Famous Blues Scale Examples
Vibrato and string bending on the flat 5 (F) creates the signature B.B. King cry. Listen for how he bends F up to F#.
Creams cover is almost entirely A minor blues scale. The Eb blue note drives the tension in every lead phrase.
SRV used the blues scale across all 6 strings in E. The Bb (flat 5) over the IV chord (A7) creates that signature Texas grit.
The original Delta blues. Johnson mixed the minor blues scale with major blues phrases, creating the ambiguity that defines authentic Delta style.
Hendrix was a master of mixing major and minor blues scales in the same phrase. The intro uses major blues; the solo uses minor blues for contrast.
Page plays almost exclusively in C minor blues scale throughout the solo. One of rock's greatest blues guitar showcases.
Blues Scale by Genre
| Genre | Scale Used | Common Keys | Feel | Production Tip |
|---|---|---|---|---|
| Delta Blues | Minor blues + major blues mixing | E, A, D (open tuning friendly) | Raw, spiritual, intense | Mix minor and major blues in the same phrase for authentic Delta ambiguity. The "wrong note" feeling is the point. |
| Chicago Blues | Minor blues scale | A, E, Bb (horn-friendly keys) | Urban, amplified, tight | Chicago blues locks to the chord changes more than Delta. Play the flat 5 on the tonic chord, resolve it before the IV chord changes. |
| Rock / Hard Rock | Minor blues scale (extended range) | A, E, D (power chord keys) | Aggressive, powerful, anthemic | Rock blues playing favors position-based box patterns. Learn the A minor blues box at the 5th fret and you have 80% of classic rock covered. |
| Jazz Blues | Blues scale + bebop extensions | F, Bb, Eb (flat keys) | Sophisticated, chromatic, swinging | Jazz blues uses the blues scale as a starting point, then adds chromatic passing tones and chord-specific arpeggios. The flat 5 becomes a chromatic approach note. |
| Hip-Hop / Trap | Minor blues (sampled) | Any minor key | Soulful, dark, moody | Hip-hop samples heavily from blues and soul records. Detecting the blues scale in a sample tells you which notes will work for original melodies over that loop. |
| Soul / R&B | Major blues over minor blues harmony | C, F, G (vocal-friendly keys) | Emotional, warm, churchy | Soul singing uses major blues melodies over minor blues chord progressions. This tension between major melody and minor harmony is the core of gospel-influenced R&B. |
| Country / Southern Rock | Major blues scale | G, D, A, E (open/capo friendly) | Bright, twangy, feel-good | Country uses the major blues scale far more than minor. The flat 3 blue note gives country licks their signature "sweet and twangy" quality without going dark. |
| Funk | Minor blues (rhythmic, staccato) | A, D, G, C | Rhythmic, percussive, groove-locked | Funk uses blues notes as rhythmic accents more than melodic phrases. Short flat-5 pops and ghost notes create the characteristic funk guitar sound (think Nile Rodgers). |
Using the Blues Scale in Music Production
Identify the blues scale in samples
When you detect a minor key in a sample via BeatKey, assume the blues scale may be in play. Look for the flat 5 note in the melody (half a step above the 4th). If it is there, you are working with blues-scale source material.
Write melodies in the blues scale
Blues scale melodies work over almost any minor chord progression. The flat 5 creates tension that resolves naturally to the 5th (or moves down to the 4th). This tension-release shape is the basis of all blues phrasing.
Layer over blues chords
The standard blues progression (I7, IV7, V7) uses dominant 7th chords. The minor blues scale played over these major-ish chords creates the characteristic blues tension. The b3 of the scale against the major 3rd of the chord is intentional dissonance, not a mistake.
Mixing major and minor blues
Play minor blues scale phrases over the I chord, then switch to major blues phrases as you hit the IV chord. This is how authentic blues players think. Detecting the tonal center of a sample with BeatKey tells you which root to build from.
The blue note as a bend target
In sampled music, the flat 5 blue note often appears as a bent note (sitting between the 4th and 5th). When you detect this in a sample chord progression, that ambiguity is a feature, not a flaw. Build your chord stacks around it rather than trying to resolve it.
Blues scale for 808 bass lines
Use notes.beatkey.app to find the Hz values for blues scale notes in your track key. 808 bass lines that hit the flat 5 briefly before resolving to the 5th create the classic trap/hip-hop bass tension without clashing.
Blues Scale Production Workflow
Frequently Asked Questions
What notes are in the blues scale?
The minor blues scale has 6 notes: the root, flat 3, 4, flat 5 (the blue note), 5, and flat 7. For example, A minor blues is: A, C, D, Eb, E, G. The flat 5 (Eb in A blues) is the defining blue note that gives the scale its characteristic tension and expressiveness.
What is the difference between the blues scale and the pentatonic scale?
The blues scale is the minor pentatonic scale with one extra note: the flat 5, also called the blue note or diminished fifth. The minor pentatonic has 5 notes (1, b3, 4, 5, b7), while the blues scale has 6 notes (1, b3, 4, b5, 5, b7). The flat 5 creates the characteristic blues tension and expressiveness that defines the scale.
What is the major blues scale?
The major blues scale is the major pentatonic with a flat 3 added as the blue note. Its intervals are: 1, 2, b3, 3, 5, 6. In C: C, D, Eb, E, G, A. The major blues scale has a brighter, more uplifting sound than the minor blues scale and is commonly used in country, rock, and gospel. Many blues players mix major and minor blues scales in the same solo.
What key is the blues scale usually played in?
The most common blues keys are A, E, D, G, C, and B on guitar, because these work well with open strings and standard tuning. On piano and in jazz, flat keys like Bb, Eb, F, and Ab are common because they suit horn players. The blues scale works in all 12 keys, and the best key depends on the instrument, singer range, or the key of a sample you are working with.