Theory
Now that you've got the four-bar conversation, today you spread it across all twelve bars. Trade asking with comping and answering with solo three times, and a twelve-bar piece is complete. Today is a rehearsal — practice letting it flow from start to finish in one pass without stopping. You've done enough part practice; now it's time to roll a whole piece at once.
The twelve-bar blues moves on three chords — A7 (I), D7 (IV), E7 (V). The comping boogie shifts to each chord's root whenever the chord changes. A7 rolls the same 5→6→b7 shape from the open A on string 5, D7 from the open D on string 4, E7 from the open E on string 6. Just change the root you press, and the same boogie hand shape works for all three chords. The answering solo can stay in box 1 the whole time — box 1 fits all twelve bars even as the chords change.
The heart of a rehearsal is not stopping. If you miss a note in the middle or your hands tangle, just keep tapping the shuffle with your foot. The moment you stop to fix a mistake the conversation breaks, but if you just let it flow the piece stays alive. Today, at BPM 80, shuffle, aim to pass through the twelve bars from start to finish in one go. It doesn't have to be perfect — the very experience of flowing to the end prepares you for tomorrow's graduation recording.
▶ The three roots of A7, D7, E7. Roll the same 5→6→b7 boogie over each root and the comping follows the chords.
See it
Now look again at the box 1 where the answering solo lives. Remarkably, this one box 1 fits over all three chords — A7, D7, E7. Even as the chords change, the solo hand stays put — no need to find a new place to answer.
▶ With this one box 1 you can answer all twelve bars. No need to move it along with the chords.
The comping moves with the chords, the solo stays in box 1 — this division of labor makes a one-person blues easy.
Today's practice
0–10 min · Warm-up BPM 60. First practice just moving the root when the chord changes. A7 → D7 → E7, rolling the boogie one bar at a time.
▶ BPM 60, shuffle. A7 → D7 → E7. Move the root to strings 5, 4, and 6, rolling the same boogie hand shape.
10–20 min · Brain training (today's target = a non-stop run-through) Before real practice, draw the whole twelve-bar map in your head. Recall in advance where you comp and where you solo, and where the chords change. With the map in your head, you won't lose your way mid-play and can flow to the end.
20–40 min · Real practice: full 12-bar run-through (BPM 80) Today's finished piece, the full 12-bar run-through. Ask with two bars of comping and answer with two bars of solo, repeating three times as the chords move. Don't stop — let it flow from start to finish in one pass.
▶ BPM 80, shuffle. 1–2 A7 comp → 3–4 solo → 5–6 D7 comp → 7–8 solo → 9 E7, 10 D7 comp → 11–12 solo. Pass through in one go without stopping.
If you pass through the twelve bars without stopping even once, tomorrow's graduation recording is already more than half ready.
40–50 min · Recording Record the full 12-bar run-through whole. It doesn't have to be perfect — capture that flow of moving to the end without stopping.
Today's completion criteria: Over A7, D7, E7 you passed through the comp↔solo conversation across all twelve bars in one go without stopping, and recorded the full run-through.
Common mistakes in the full run-through. Most come from stopping to fix a mistake.
▶ Keep moving to the next chord. Even if you slip, move the root on time and the piece keeps flowing.
- Stopping to fix a mistake. Stopping kills the piece. Even if you miss, just move to the next bar.
- Missing the chord change. The root moves at bars 5 and 9. Prepare your hand in advance.
- Leaving the box in the solo. For answering, staying in box 1 is plenty. Don't wander far.
- Putting off recording. Waiting to record when it's perfect means never doing it. Capture today's flow as it is.