The below lesson is written for guitar. Many blues bass players will be hanging out the root and fifth notes of the chords. But we wanted to present other ideas so you can stretch out a bit if you desire. Try some of the other scales and notes listed below and get creative with your bass lines. You just don’t have to play pentatonic scales, as there are lots of options out there depending on your playing style and the groove and mood you want to create laying down that bass. These listed below will hopefully inspire you to be creative and experiment while developing your own style.
This acoustic jam is in the key of E and it’s a 12-Bar blues I-IV-V progression utilizing 7th chords. E7 is the I chord, A7 is the IV chord, and B7 is the V chord. Like many turnarounds, the turnaround here is on the V chord, B7. Since this is a major key I-IV-V blues progression it is wide open for many different soloing opportunities. Also, as soon as you hear 7th chords consider using Mixolydian mode over each chord.
What Relates to all the chords:
Many options in this jam as it’s a major key I-IV-V 12-bar blues so a lot will depend on your playing style and what type of mood or sound you will want to create.
Try E Minor Pentatonic & Blues over all the chords for that minor bluesy vibe. Minor Pentatonic is often the first choice amongst blues players over I-IV-V blues progressions.
E Minor Pentatonic = E, G, A, B, D
Try E Major Pentatonic over all the chords for that sweet major sound. Remember that for most major key jams you can use Major Pentatonic over all the chords This will give you that sweet major bluesy sound that is quite different than the minor sound:
Major Pentatonic = 1, 2, 3, 5, 6
E Major Pentatonic = E, F#, G#, B, C#
E Major Pentatonic is the same as C# Minor Pentatonic. E Major and C# Minor are relative major and minor. If you think more in terms of Minor Pentatonic or just know those shapes then play all your C# Minor Pentatonic scales, but start on and emphasize the E notes and it will be sweet sounding E Major Pentatonic.
E Major Pentatonic = E, F#, G#, B, C#
C# Minor Pentatonic = C#, E, F#, G#, B
(Same notes – just emphasize the root of the mode, E.)
Try E Dorian over all the chords. Because we know that both Major Pentatonic & Minor Pentatonic will work, we then know that the Dorian mode will also work. Dorian is considered more of a minor mode, but works great over major key I-IV-V blues, swings, and shuffle progressions.
Dorian works great over major key I-IV-V blues, swing, and shuffle progressions. Dorian has the minor elements in it (b3, b7) but also has some major elements, (2nd, 6th). So in these blues progressions the Dorian mode will give you that hybrid kind of minor/major sounds as it combines the elements of both minor and major.
Dorian Mode = 1, 2, b3, 4, 5, 6, b7
Dorian is the 2nd mode in any major key. To determine E Dorian ask what major scales’ 2nd note is an E note. The answer is D. So E Dorian is the same as D major:
E Dorian = E, F#, G, A, B, C#, D
D major = D, E, F#, G, A, B, C#
(Same notes – just emphasize the root of the mode, E.)
To play in E Dorian just play all your D major scales but start on and emphasize the E notes. Try resolving your licks focusing on those E notes to bring out that minor Dorian tonality.
Try mixing E Minor Pentatonic & Blues, E Major Pentatonic, and E Dorian over all the chords. Notice how going back and forth from the five-note pentatonics to the seven-note diatonic scales can be quite refreshing to the ear. Experiment and get creative!
Treat each chord like a separate event:
Switch Pentatonics over each chord. Over the E7 chord try E Minor Pentatonic & Blues or E Major Pentatonic. Over the A7 chord try A Minor Pentatonic & Blues or A Major Pentatonic. Over the B7 chord try B Minor Pentatonic & Blues or B Major Pentatonic.
Try Mixolydian mode over each chord. Mixolydian mode works great over 7th chords as there is that b7 in the 7th chords, (1,3,5,b7), as well as in the Mixolydian mode (1,2,3,4,5,6,b7). Mixolydian is often the mode of choice over dominant chords.
Mixolydian is an incredibly useful mode, especially for blues and jazz playing. The Mixolydian Mode is a seven-note scale often used in blues and rock. Mixolydian is considered a major mode and is always the 5th mode in any major key. Mixolydian is basically a major scale, (Ionian Mode), but with a b7th interval instead of a natural 7th:
Mixolydian Mode = 1, 2, 3, 4, 5, 6, b7
Major Scale (Ionian Mode) = 1, 2, 3, 4, 5, 6, 7
Over the E7 chord try E Mixolydian (=A Major). Over the A7 chord try A Mixolydian (=D Major). Over the B7 chord try B Mixolydian (=E Major).
Try Dorian mode over each chord. Even though Mixolydian mode would be the mode of choice in this jam, Dorian will also work and you may want to try it over each chord to see how it sounds to your ears. Dorian is considered more a minor mode but works over major key I-IV-V blues progressions, (1,2,b3,4,5,6,b7)
Play E Dorian, (=D major), over the E7 chord. Play A Dorian, (=G major), over the A7 chord. Play B Dorian, (=A major), over the B7 chord.
Try mixing Minor Pentatonic and Major Pentatonic over each chord. This is a very cool technique that many blues players like BB King utilize all the time.
Try E Major Pentatonic over the E7 chord, then switch to E Minor Pentatonic & Blues over the A7 chord, then try E Major Pentatonic again when you get to the B7 chord. Listen to how well this technique outlines and implies the chord changes. Mix this up a bit, maybe the next time around the progression try Minor Pentatonic & Blues over the B7 chord. Get creative and have fun trying all these various techniques and devices. Add the ones you like best to your playing arsenal and rock them out!