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14 plays (7 progressions x 2): Bud Powell shells, rootless Type A/B, guide-tone comps; comping rhythms; piano-angled improv. Hand spans <= a 10th throughout. Critic returned once (6 prose voice-leading overclaims on fifths-apart dominant alternation), fixed, PASS on re-gate (all 6 corrected sentences arithmetic-verified both directions); ride-along one-word polish per gate suggestion. Rendering the authored pack in the Jam Guide is task L-24. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>