Bass Patterns based upon the Major Scale box.
Major Scale Box.
G|---2---|-------|---3---|---4---| 1st string
D|---6---|-------|---7---|---8---|
A|---3---|---4---|-------|---5---|
E|-------|---R---|-------|---2---|4th string
Basic Chords
Major Triad = R-3-5
Minor Triad = R-b3-5
Diminished Chord = R-b3-b5-b7
7th Chords
Maj7 = R-3-5-7
Minor 7 = R-b3-5-b7
Dominant 7 = R-3-5-b7
½ diminished = R-b3-b5-b7
Full diminished = R-b3-b5-bb7 Harmonic minor and melodic minor will use the full bb7
Scales
Major Pentatonic = R-2-3-5-6
Minor Pentatonic = R-b3-4-5-b7
Blues = R-b3-4-b5-5-b7
Major Scale = R-2-3-4-5-6-7
Natural Minor Scale = R-2-b3-4-5-b6-b7
Harmonic Minor Scale = R-2-b3-4-5-b6-7
Melodic Minor Scale = R-2-b3-4-5-6-7
Major modes
Ionian same as the Major Scale.
Lydian use the major scale and sharp the 4 - yes, it’s that simple.
Mixolydian use the major scale and flat the 7.
Minor Modes
Aeolian same as the Natural Minor scale.
Dorian use the Natural Minor scale and sharp the b6 back to a natural 6.
Phrygian use the Natural Minor scale and flat the 2.
Locrian use the Natural Minor scale and flat the 2 and the 5.
Generic Notes.
The root, five and eight are generic and fit most any chord. Remember the diminished has a flatted 5.
The 3 is generic to all major chords.
The b3 is generic to all minor chords.
The 7 is generic to all maj7 chords.
The b7 is generic to all dominant seventh and minor seventh chords.
The 6 is neutral and adds color, help yourself to 6’s.
The 2 and 4 make good passing notes. Don’t linger on them or stop on them, keep them passing.
In making your bass line help yourself to those notes, just use them correctly.
Roots, fives, eights and the correct 3 will play a lot of bass. So R-3-5-8 will let you play a lot of bass.
Start with just roots and change roots as the chord change in the progression, then move to R-5-R-5, when that get comfortable you will know what else to add by then.