Watch the E Dub online guitar lesson by Andrew Ford from Essentials: Walking Bass Lines
This is a blues in G that has a quick 4 on the first chorus. We start off with a root-octave interval then finishing the triad B to D, 3 and 5, next we have that quick change to the 4 chord where we play the root, C, walk up the scale to the 2, D, and to the major 3rd, E and end bar 2 on the 6. This goes smoothly back to the root of the 1 chord in our blues progression, G, then we go to the 6, E, the 5, D, and to the major 3rd, B. A common motif you find in many songs including the Beatles 8 Days a Week. Next we have another bar of G7 where we play a 1-2-3-5 motif, very foundational but it is all about the feel. Next we go back to the 4 chord for two bars, C7 and play a two bar phrase starting on the root, C, to the major 3rd, E, to the 2, D, and back to the major 3rd, E, we repeat this major 3rd again to start the next bar moving up to the 5, G, then add a little tension with F#, the #4 or flat 5, leading to A, the 6. This bar moves in thirds giving it a melodic quality, minor 3rd intervals from E to G, and F# to A. We then repeat bar 3 in bar 7, repetition can be very effective especially if it is a strong motif you are repeating. Now in bar 8 we have a turnaround where the chords are 2 beats each giving us less time to establish our tonal center. So we begin with the root, B, move up to the b5 which is in the chord but also serves as a half step transition to the next chord, E7, where we play the root, E, and again the flat 5 which is not in the chord but is a chromatic connecting note to the A in bar 9. This bar is a minor chord, Am7, so after playing the root, A, we outline the minor triad with a descending pattern, going down to the 5, E, the minor 3rd, C, and back to the root, A. We will repeat that A on the downbeat of bar 10 which is the 5 of the D7 chord, we continue that bar playing the b7, C, the root, D, and a chromatic note, G# that leads to the G that begins our 2 bar turnaround that ends the phrase. The chords again are 2 beats each and start on G7 where we play the root and go down to the major 3rd, play the root of our E7 chord and then a Bb chromatic note that leads to our Am7 chord where we play the root and then 5, E, and the last chord of the 12 bar phrase is D7 and we will play the root, D, and the major 3rd, F#, that walks us nicely into the G that begins our 2nd chorus.
This chorus has no quick 4 so we will play G7 for the first 4 bars. These 4 bars have a strong boogie woogie style bass motif that is simple but melodic. We start on G on the D string, walk down to the major 3rd, B, then to the 5, G, and finally the 6, A, a 1-3-5-6 pattern. We answer that in bar 14 with a 1-6-5-3 pattern, the reverse. We repeat bar 13 for bar 15 and answer that bar by walking up from G with another 1-2-3-5 pattern but this time an octave up, this also leads us to our chord change, C7. Here we repeat the pattern played in bars 13 and 14 but in C. They are 1-3-5-6 and answering with 1(octave)-6-5-3. For our G7 chord we repeat the descending 1-6-5-3 pattern from bar 14, the next bar continues with 2 beats of G7 and two beats of E7, we are able to make this sound fluid using common tones making it feel like one chord instead of 2. We walk up from G in a scalar pattern, to A, the 2, then B is the 3rd of G but also the 5 of our new chord E7, we end on E which is the root but also the 6 of G. Bar 21 is the Am7 chord again, we do a common walk up from the root A to the 2, B, to the minor 3rd, C, and chromatically up to C# that leads to the next chord D7, where we play the root, D, and follow with the notes that make up the 1-2-3-5 pattern, D, E, F#, and A. In bars 23 and 24 we have another turnaround where we play the root, G, down to the 5, D, we double up on the root E for the next chord E7 and for the last bar play the root A, down to the 5, E, root again of our next chord D7, D, and end with the major 3rd, F# that leads us to the top of the phrase.