Let look a 12 bar in G. Music theory we can make a chord from the major scale ( we are looking at the Root, 4 and 5 chords ) we use the 1 , 3 and 5th note form the scale
ROOT chord 1=G, 3=B and 5= D
4 chord 1=C 3=E 5=G
5 CHORD 1=D 3 F# 5 = A
This tab show the postion of these 3 chords all major.
G chord all open note for the root of the 5th string 4th chord at the 5th potion 5th chord at the 7th position
The 12 bar hear is basic one chord per bar count 1 2 3 4
The 12 bar works like this starts on bar 9 on this tab with 12 bar structure above it
1st chord for 4 bars 4th chord for 2 bars(bar 5 and 6_ 1st for 2 bars ( bar 7 and 8 5th 1 bar (bar 9 ) 4th 1 bare(bar 10) 1st one bar( bar 11) 5th one bar(bar 12)
with your 1st finger bar across the fret form the 5th down to 1st string.
If you have tried the basic 12, then we try the quick change. We replace the 2 bar bar in 12 bar sequence with 4th chord ( C is the 4th chord) henc bar 2 is now C not G
Bar 1 G is open t he G6 we play G open and use finger 1 to play the 2 fret of the D string G7 we play G open and use 2nd finger to play the 2 fret of the D string
C chord bar the G and D with 1st finger to play D5 at the 5th frets D6 keep the bar shape and use the 3rd finger to play 7th fret on the d string D7 keep the bar shape and use the 4th finger to play 7th fret on the d string
D chord bar the 7th fret with 1st finger
bar the G and D with 1st finger to play D5 D6 keep the bar shape and use the 3rd finger to play 9th fret on the d string D7 keep the bar shape and use the 4th finger to play 10th fret on the d string
Practice these shapes , then we will play 1 12 bar in this bit.
If you have worked through all the sections this should be 2nd hat by now.
We can now apply the shuffle to 8th note boogie , but this will have that pulse effect same rules apply to 8th note chords and fingerimg, it the right hand that does the work, ie the shuffle beat.
Count out the same as we disused in the Triplet and Shuffle conting. If you have done that this shuuld be getting more easier.
Take care have fun , that was a lot to get through.
Any question post them hear , if you want a video posted or something.