Bass Guitar Scale Chart
Interactive bass fretboard diagram for all 12 keys and 9 scale types. EADG standard tuning. Root notes highlighted in bright violet.
E Pentatonic Min - Bass Fretboard (EADG)
Popular Bass Scale Shapes
Bass Scales by Genre
| Genre | Go-To Scales | Why It Works | Common Keys |
|---|---|---|---|
| Funk / R&B | Dorian, Pentatonic Min | Chromatic approach notes and b3 give that signature funk pocket | E, A, G, D |
| Hip-Hop / Trap | Pentatonic Min, Minor | Simple intervals lock with 808s; minor pentatonic avoids clashes | E, A, D, G |
| Rock / Metal | Natural Minor, Pentatonic Min | Heavier intervals and driving quarter note patterns | E, A, D, G |
| Blues | Blues Scale, Pentatonic Min | b5 blue note adds tension; chromatic runs between 4 and 5 | E, A, G, D |
| Jazz | Dorian, Major, Mixolydian | Walking bass follows chord changes; scale tones give smooth voice leading | F, Bb, C, G |
| Reggae / Dub | Major, Mixolydian | Melodic roots and fifths on the one; offbeat emphasis in between | E, A, D |
| Progressive Rock | Natural Minor, Phrygian | Odd time signatures benefit from knowing all scale tones across the neck | E, D, C, G |
| Neoclassical Metal | Harmonic Minor | Raised 7th creates the dramatic V-i resolution; works with sweep arpeggios | E, A, D |
Famous Bass Lines and the Scales Behind Them
Bass Scale Tips for Producers
Root-Fifth Anchor
Start every bass line by locking the root on beat 1 and the 5th on beat 3. This creates a rock-solid foundation before adding passing tones.
Octave Shapes
The octave shape (root + 12th fret above, or root + 2 strings up + 2 frets over on EADG) is the fastest way to add melodic interest without leaving the root.
Approach Notes
Use the chromatic note one semitone below your target scale tone as an approach note (a grace note or 16th note before the beat). This is the core of funk and jazz bass.
b3 to 3 Slide
Slide from b3 up to 3 (or the reverse) for an instant blues feel. In E, that is G sliding up to G# (or Ab). Used in virtually every blues rock and soul bass line.
Scale for Sample Identification
Upload your sample to BeatKey to detect the key, then use this diagram to find all the scale tones on the fretboard. Identify which scale the sample uses before building your bass line.
Harmonize with the Chord
When the chord changes, the bass should emphasize scale tones that are in the chord (root, 3rd, 5th, 7th). Passing tones fill the space between chord tones. Dorian and minor pentatonic minimize wrong-note risk.
How to Read a Bass Scale Diagram
Strings and Frets
Horizontal lines are strings. Top line is the high G string (thinnest). Bottom line is the low E string (thickest). Vertical columns are fret positions. Fret 0 is open string, no fretting required.
Dot Colors
Bright violet filled dots are root notes (the tonic of the scale). Light violet dots are other notes in the scale. Empty spaces are notes outside the scale. The note name is shown inside each dot.
EADG Tuning
Standard bass tuning is EADG low to high. String 4 (low E) is at the bottom of the diagram. String 1 (high G) is at the top. This matches how a bassist looks down at their instrument. 5-string players add a low B below the E string.
Bass Scales vs Guitar Scales
| Feature | Bass Guitar | Guitar |
|---|---|---|
| Strings | 4 standard (EADG), 5-string adds low B | 6 strings (EADGBE) |
| Tuning | Same as bottom 4 strings of guitar | EADGBE standard |
| Octave | One octave lower than guitar | Higher octave range |
| Scale notes | Same formulas, same note names | Same formulas, same note names |
| Fretboard patterns | Wider fret spacing, 4-string patterns | Narrower fret spacing, 6-string patterns |
| Role in music | Defines the harmonic root and rhythm | Melody, chords, and fills |
| Primary function | Root, 5th, octave for locking the groove | Scale runs, solos, chord voicings |
The scale formulas (intervals) are identical between bass and guitar. The patterns look different because bass has 4 strings vs guitar 6. A G Dorian scale has the same notes on both instruments.
Frequently Asked Questions
What scales should a beginner bassist learn first? v
Start with the pentatonic minor scale. It has only 5 notes, works over major and minor grooves, and is used in rock, blues, R&B, and hip-hop bass lines. Learn the shape starting on the low E string (E minor pentatonic: E-G-A-B-D), then shift it up the neck for other keys. Once comfortable, add the blue note (b5) to get the full blues scale.
What is the most important bass scale for funk? v
The Dorian mode is the go-to scale for funk bass. It is a minor scale with a raised 6th, giving it a bright minor quality that sits perfectly under funk chord vamps. Classic funk bass lines by Stevie Wonder, James Brown, and Parliament-Funkadelic are mostly built from Dorian or minor pentatonic over dominant 7 and minor 7 chord grooves. Try E Dorian: E-F#-G-A-B-C#-D.
How do I read a bass scale diagram? v
Each horizontal line is a string (top = high G, bottom = low E for standard EADG tuning). Vertical columns are fret positions (0 = open string, no fretting). Bright violet filled dots are root notes. Light violet dots are other scale tones. The note name is inside each dot. Numbers at the bottom show fret positions.
What is the difference between bass scales and guitar scales? v
The scale formulas and note names are identical. G Dorian has the same notes on bass and guitar. The difference is the instrument: bass has 4 strings (EADG) versus guitar's 6 strings (EADGBE), and bass plays one octave lower. Fretboard patterns look different because there are fewer strings and wider string spacing, but the scale knowledge transfers completely between the instruments.