Inside moves to graft onIN·21 Passing dim7 to 5the #4 dim7 in bar six — splits the 4⁷ from home and walks the bassIN·10 Dominant of 5sharpen the turnaround: make bar nine a real 2⁷ before the 5⁷IN·36 Tritone Substitutiontritone-sub the last 5⁷ so the turnaround bass slides b2 → 1Ways outOUT·01 Truck Driver: Up a Half Stepthe set-closer lift: same shuffle, one fret hotterOUT·05 Breakdown Resetbreakdown to nothing, then restart the 12-bar anywhere you like
Target notes, chord by chordThe guide tones: 3rd and b7 of EACH chord, not the key. Over 1⁷ that's the key's 3 and b7; when the 4⁷ arrives, the key's b7 becomes that chord's 3rd — one note re-aims and the whole line follows.How the scale is playedBlues scale with the b3 curled a quarter-tone sharp — the note between the piano keys. Swing the 8ths, phrase in two-bar call-and-response, and leave the response shorter than the call.Genre theoryBlues tonality is major and minor simultaneously: the band plays major-ish dominants while the lead leans minor. The grind between the melody's b3 and the chord's 3 isn't a mistake — it's the genre.