If you like the blues with a walking bass line, you will enjoy this lesson. It's pretty cut to the chase, but it will teach you the basics and you can build on that. Notice how the bass lines connect the chords together just like a bass player would do. See if you can change the bass lines with your own ideas. A good start is use the 1,3,5,b7 notes from the scale of the chords A7,D7,E7. We will use the b7 since were playing dominant 7th chords.
You can also use chromatic passing notes to connect the notes together to make your bass lines seamless. You should also experiment with adding different chords variations maybe even adding some licks in between the chord changes. See the file attachment for the 12 bar blues tab with the added bass lines. We will be playing in the key of A.
A7 D7 A7
E||-----------------------|---------------------|-------------------|
B||-------5---------------|-------5-------------|------5------------|
G||-------6---------------|-------5-------------|------6------------|
D||-------5-------------5-|-------4-------------|------5--------5---|
A||------------4----7-----|---5-----------------|----------4--7-----|
E||--5--------------------|-----------0---2--3--|---5---------------|
A7 D7 D7
|-------------------------|---------------------|-------------------|
|-------5-----------------|---------5-----------|-------3-----------|
|-------6-----------------|---------5-----------|-------5-----------|
|-------5-----------------|---------4-----------|-------4-----------|
|------------4--7--6------|--5------------------|--5----------------|
|--5----------------------|------------0--2--3--|-----------0--2--3-|
A7 A7 E7
|-------------------------|---------------------|-------------------|
|-----5-------------------|------5--------------|------5------------|
|-----6-------------------|------6--------------|------7------------|
|-----5------------5------|------5--------------|------6------------|
|--------4----7-----------|----------4--5--6----|--7----------------|
|--5----------------------|----5----------------|----------7--6--5--|
D7 A7 E7
|-----------------------|------------------------|------------------|
|--------3--------------|----------5-------------|-------5----------|
|--------5--------------|----------6-------------|-------7----------|
|--------4--------------|----------5----------5--|-------6----------|
|---5-------------------|--------------4---7-----|--7---------------|
|-------------0---2--3--|----5-------------------|----------7--6--4-|
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