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5 forms (standard/quick-change 12-bar, 8-bar, minor blues, turnaround cycle) x 2 plays each: barre shuffle, Texas 9th stabs, Chicago tritone shells, minor m7 + 7#9 climax. 4 named comping patterns, improv rules, 2 sourced licks. Validator and build green. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>