G Blues Scale
Notes in the G Blues Scale
| Degree | Name | Note | Frequency (A=440) |
|---|---|---|---|
| 1 | Tonic | G | 391.995 Hz |
| ♭3 | Minor Mediant | A# | 466.164 Hz |
| 4 | Subdominant | C | 261.626 Hz |
| ♯4 | Blue Note | C# | 277.183 Hz |
| 5 | Dominant | D | 293.665 Hz |
| ♭7 | Subtonic | F | 349.228 Hz |
Interval Pattern
| Step | Interval | Semitones | From Note | To Note |
|---|---|---|---|---|
| 1 | Aug 2nd (WH) | 3 | G | A# |
| 2 | Whole Step (W) | 2 | A# | C |
| 3 | Half Step (H) | 1 | C | C# |
| 4 | Half Step (H) | 1 | C# | D |
| 5 | Aug 2nd (WH) | 3 | D | F |
| 6 | Whole Step (W) | 2 | F | G |
Chords Built on Scale Degrees
| Degree | Note | Chord | Quality |
|---|---|---|---|
| 1 | G | G (complex) | other |
| ♭3 | A# | A# minor | minor |
| 4 | C | C (complex) | other |
| ♯4 | C# | C# (complex) | other |
| 5 | D | D (complex) | other |
| ♭7 | F | F (complex) | other |
Key Signature
1 ♯ — The G key signature uses F#.
G Blues Scale in Practice
The G Blues Scale uses the key signature of 1 sharp (F#). G major has one sharp (F#) and is one of the most common keys in folk, country, and rock music. Its open, resonant quality makes it ideal for guitar-based music. On guitar, G positions offer open-string resonance for fingering positions for this scale.
The blues scale adds the flat 5th (blue note) to the minor pentatonic scale, creating the characteristic dissonant tension central to blues, jazz, and rock music.
Tuning Frequencies Across Temperaments
Frequencies shown at A=440 Hz. View full temperament data for any note.
| Note | Equal Temp. | Pythagorean | Just Intonation |
|---|---|---|---|
| G | 391.995 Hz | 391.111 Hz | 392.438 Hz |
| A# | 466.164 Hz | 463.538 Hz | 470.926 Hz |
| C | 261.626 Hz | 260.740 Hz | 261.626 Hz |
| C# | 277.183 Hz | 278.437 Hz | 279.067 Hz |
| D | 293.665 Hz | 293.332 Hz | 294.329 Hz |
| F | 349.228 Hz | 347.654 Hz | 348.834 Hz |
Related Scales
Guitar: G Blues Scale Positions
The G key offers 1 sharp (F#) on guitar. Sharp-side keys like G are idiomatic guitar keys because open strings (E, A, D, G, B, E) align with the scale's natural resonance points.