Twelve-bar blues in E
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The most useful thing on this wiki. Shuffle feel, count "1 and 2 and".
E7 (4 bars) A7 (2) E7 (2) B7 (1) A7 (1) E7 (1) B7 (1, turnaround)
Boogie pattern for the E bar:
E|-0-0-2-2-4-4-2-2-| A|-0-0-0-0-0-0-0-0-| (low E open throughout)
Move the same shape to A (A and D strings) and B (B7 chord or the shape at the 2nd fret). Turnaround:
e|---------------0-| B|-3-2-1-0-------0-| G|---------------1-| D|---------------2-| A|---------------2-| E|-0-0-0-0-------0-|