SEVEN BASIC BASS SCALES.
With all these scales at your fingertips, you get more choices in terms of flavor, or color, when playing your bass guitar. Or you can think of it as starting with the same basic cooking recipe but adding different flavors (different sounds) to change it slightly.
In almost every song, one mode predominates. (Mode is simply a fancy word for scale.) When you play with other musicians, the first song may be primarily dominant, the next minor, and the next major. Know the mode you’re in, and you’ll be well on your way to providing great bass lines for any song.
**You can see how the modes are related when you compare them to either the major or minor scale. You’ll need to adjust the major or minor scale to create each of the modes on the fingerboard.**
The modes are easy to understand when you know their origin.
The C major scale (C, D, E, F, G, A, B, and C), which is also known as C Ionian, starts and ends on the 1 of the scale — the C. If you play the exact same C scale but start on its 2nd note (D), you end up with the D Dorian mode (D, E, F, G, A, B, C, and D).
Even though D Dorian has the same notes as C Ionian, it sounds different — somewhat sad. A tune based on D Dorian also will sound sad.
If you start and end on the 3rd note of the C major scale (E), you end up with the E Phrygian mode (E, F, G, A, B, C, D, and E). You hear a sound that’s different from the Ionian and Dorian modes, even though the notes are the same. It sounds somewhat exotic.
If you start and end on the 4th note of the C major scale (F), you get the F Lydian mode (F, G, A, B, C, D, E, and F). This mode produces a sound that’s somewhat similar to the sound made by the Ionian mode — major and happy.
If you start and end on the 5th note of the C major scale (G), you get the G Mixolydian mode (G, A, B, C, D, E, F, and G). This mode is the dominant scale.
If you start and end on the 6th note of the C major scale (A), you get the A Aeolian mode (A, B, C, D, E, F, G, and A), which also is your natural minor scale.
If you start and end on the 7th note of the C major scale (B), you get the B Locrian mode (B, C, D, E, F, G, A, and B), which produces a somewhat harsh sound.
As you can see, each mode starts on a different note of the C scale but uses the same notes. Also notice that each of these modes has its own triad and 7th chord — the 1, 3, 5, and also the 7 — and each chord sounds uniquely like the mode it’s related to.
For example, the 1, 3, 5, and 7 of C Ionian are C, E, G, and B — a major 7th chord. The 1, 3, 5, and 7 of D Dorian are D, F, A, and C — a minor 7th chord.
The common order of these modes is: Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian, and Locrian. Sounds Greek to you, you say? Well, it actually is!
You can play each mode and its chord without shifting the left hand (in one position), with the exception of the Dorian mode. (In the case of the Dorian mode, you need to make a small, one-fret shift with your left hand to execute the mode.)
This position is referred to — playing without shifting the left hand — as the box because the notes fit into a boxlike pattern on the fingerboard (or look like a box on the grid). When you play a groove, you want to keep the pattern within the box as much as possible so your playing is smooth and efficient.
Practice each of these seven modes (scales) on your bass and listen carefully for the unique sound that each one produces.
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