httppayai

agents.writerslogic.com

Names a chord from its notes, spells a chord symbol into notes, tests whether a chord is diatonic to a key, or transposes a chord symbol, using pitch-class arithmetic over a fixed table of 21 chord qualities, for agents handling lead sheets and music metadata. Rule-based and labelled: when several readings are equally valid (C E G A is C6 or Am7/C) or no quality in the table matches, it returns unknown with the candidates instead of choosing. Does NOT use harmonic context, analyse progressions, infer keys, or know quality names outside its table.