{ "recorded": "2026-09-15", "mode": "Offline local-rule software replay", "cases": [ { "id": "pitch_001", "label": "Pitch", "instruction": "Transpose measure 1 of staff 1 up by a major second while preserving rhythm.", "scope": { "measures": [ 1 ], "parts": [], "staffs": [ "right_hand" ], "voices": [], "event_ids": [], "exclude_measures": [], "exclude_event_ids": [], "time_range": null, "whole_score": false }, "status": "generated", "reason": null, "operations": [ { "operation_id": "op_001", "type": "transpose", "selector": { "event_ids": [ "m1_rh_1", "m1_rh_2", "m1_rh_3", "m1_rh_4" ] }, "arguments": { "semitones": 2 }, "preconditions": [], "expected_change_count": 4 } ], "diff": { "added": [], "deleted": [], "changed": [ { "event_id": "m1_rh_1", "before_location": { "measure": 1, "measure_id": "m1", "part_id": "piano", "staff": "right_hand", "voice": 1, "event_id": "m1_rh_1", "offset": "0" }, "after_location": { "measure": 1, "measure_id": "m1", "part_id": "piano", "staff": 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"changed_fields": [ "pitch" ], "before": { "event_id": "m1_rh_2", "type": "note", "pitch": "D4", "duration": "quarter", "offset": 1.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null }, "after": { "event_id": "m1_rh_2", "type": "note", "pitch": "E4", "duration": "quarter", "offset": 1.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null } }, { "event_id": "m1_rh_3", "before_location": { "measure": 1, "measure_id": "m1", "part_id": "piano", "staff": "right_hand", "voice": 1, "event_id": "m1_rh_3", "offset": "2" }, "after_location": { "measure": 1, "measure_id": "m1", "part_id": "piano", "staff": "right_hand", "voice": 1, "event_id": "m1_rh_3", "offset": "2" }, "changed_fields": [ "pitch" ], "before": { "event_id": "m1_rh_3", "type": "note", "pitch": "E4", "duration": "quarter", "offset": 2.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null }, "after": { "event_id": "m1_rh_3", "type": "note", "pitch": "F#4", "duration": "quarter", "offset": 2.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null } }, { "event_id": "m1_rh_4", "before_location": { "measure": 1, "measure_id": "m1", "part_id": "piano", "staff": "right_hand", "voice": 1, "event_id": "m1_rh_4", "offset": "3" }, "after_location": { "measure": 1, "measure_id": "m1", "part_id": "piano", "staff": "right_hand", "voice": 1, "event_id": "m1_rh_4", "offset": "3" }, "changed_fields": [ "pitch" ], "before": { "event_id": "m1_rh_4", "type": "note", "pitch": "G4", "duration": "quarter", "offset": 3.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null }, "after": { "event_id": "m1_rh_4", "type": "note", "pitch": "A4", "duration": "quarter", "offset": 3.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null } } ], "global_changes": {}, "changed_element_count": 4 }, "checks": { "schema_version": "1.0.0", "operation_count": 1, "structural": { "status": "valid", "errors": [], "warnings": [], "checks": { "event_count": 16, "measure_count": 2, "operation_ids_unique": true }, "repairable": false, "suggested_repairs": [] }, "preconditions": { "status": "valid", "errors": [], "warnings": [], "checks": { "precondition_count": 0 }, "repairable": false, "suggested_repairs": [] }, "duration": { "status": "valid", "errors": [], "warnings": [], "checks": { "expected_quarters": "4", "voice_end_positions": { "m1:left_hand:v1": "4", "m1:right_hand:v1": "4", "m2:left_hand:v1": "4", "m2:right_hand:v1": "4" }, "voice_coverage": { "m1:left_hand:v1": { "covered": "4", "gaps": [], "collisions": [] }, "m1:right_hand:v1": { "covered": "4", "gaps": [], "collisions": [] }, "m2:left_hand:v1": { "covered": "4", "gaps": [], "collisions": [] }, "m2:right_hand:v1": { "covered": "4", "gaps": [], "collisions": [] } }, "pickup_first_measure_allowed": false }, "repairable": false, "suggested_repairs": [] }, "notation_relations": { "status": "valid", "errors": [], "warnings": [], "checks": { "open_ties": 0, "open_slurs": 0, "chord_onsets_checked": 0, "malformed_chords": [], "event_ids_unique": true }, "repairable": false, "suggested_repairs": [] }, "protected_scope": { "status": "valid", "errors": [], "warnings": [], "checks": { "unexpected_changed_elements": 0, "protected_element_count": 12, "preservation_rate": 1.0, "violation_details": [] }, "repairable": false, "suggested_repairs": [] }, "postconditions": { "status": "valid", "errors": [], "warnings": [], "checks": { "expected_effect_count": 1 }, "repairable": false, "suggested_repairs": [] }, "musicxml_roundtrip": { "exported": true, "reimported": true, "validator_valid": true, "issues": [], "warnings": [], "metrics": { "valid_musicxml": true, "musicxml_parseable": true, "music21_parseable": true, "musicxml_exportable": true, "measure_count": 2, "expected_measure_count": null, "measure_count_match": true, "bar_completeness": 1.0, "bar_completeness_score": 1.0, "pitch_range_valid": true, "pitch_count": 16, "empty_measure_count": 0, "rest_only_measure_count": 0, "midi_export_success": true, "pdf_export_success": true } }, "roundtrip_fidelity": { "status": "valid", "errors": [], "warnings": [], "checks": { "source_event_count": 16, "imported_event_count": 16, "missing_event_ids": [], "added_event_ids": [], "field_mismatches": [], "global_mismatches": [], "fidelity_rate": 1.0 }, "repairable": false, "suggested_repairs": [] } }, "sourceFingerprint": "sha256:ad33e5ab9d9e04650ee8b18587f965e1a03288415d4e5fa076c1d9a1a8aef6c4", "download": "/assets/demo/pitch_001.musicxml" }, { "id": "dynamics_001", "label": "Dynamics", "instruction": "Change only the third note in measure 1 to forte, preserving pitch and duration.", "scope": { "measures": [ 1 ], "parts": [], "staffs": [ "right_hand" ], "voices": [], "event_ids": [ "m1_rh_3" ], "exclude_measures": [], "exclude_event_ids": [], "time_range": null, "whole_score": false }, "status": "generated", "reason": null, "operations": [ { "operation_id": "op_001", "type": "set_dynamic", "selector": { "event_ids": [ "m1_rh_3" ] }, "arguments": { "dynamic": "f" }, "preconditions": [], "expected_change_count": 1 } ], "diff": { "added": [], "deleted": [], "changed": [ { "event_id": "m1_rh_3", "before_location": { "measure": 1, "measure_id": "m1", "part_id": "piano", "staff": "right_hand", "voice": 1, "event_id": "m1_rh_3", "offset": "2" }, "after_location": { "measure": 1, "measure_id": "m1", "part_id": "piano", "staff": "right_hand", "voice": 1, "event_id": "m1_rh_3", "offset": "2" }, "changed_fields": [ "dynamic" ], "before": { "event_id": "m1_rh_3", "type": "note", "pitch": "E4", "duration": "quarter", "offset": 2.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null }, "after": { "event_id": "m1_rh_3", "type": "note", "pitch": "E4", "duration": "quarter", "offset": 2.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "f", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null } } ], "global_changes": {}, "changed_element_count": 1 }, "checks": { "schema_version": "1.0.0", "operation_count": 1, "structural": { "status": "valid", "errors": [], "warnings": [], "checks": { "event_count": 16, "measure_count": 2, "operation_ids_unique": true }, "repairable": false, "suggested_repairs": [] }, "preconditions": { "status": "valid", "errors": [], "warnings": [], "checks": { "precondition_count": 0 }, "repairable": false, "suggested_repairs": [] }, "duration": { "status": "valid", "errors": [], "warnings": [], "checks": { "expected_quarters": "4", "voice_end_positions": { "m1:left_hand:v1": "4", "m1:right_hand:v1": "4", "m2:left_hand:v1": "4", "m2:right_hand:v1": "4" }, "voice_coverage": { "m1:left_hand:v1": { "covered": "4", "gaps": [], "collisions": [] }, "m1:right_hand:v1": { "covered": "4", "gaps": [], "collisions": [] }, "m2:left_hand:v1": { "covered": "4", "gaps": [], "collisions": [] }, "m2:right_hand:v1": { "covered": "4", "gaps": [], "collisions": [] } }, "pickup_first_measure_allowed": false }, "repairable": false, "suggested_repairs": [] }, "notation_relations": { "status": "valid", "errors": [], "warnings": [], "checks": { "open_ties": 0, "open_slurs": 0, "chord_onsets_checked": 0, "malformed_chords": [], "event_ids_unique": true }, "repairable": false, "suggested_repairs": [] }, "protected_scope": { "status": "valid", "errors": [], "warnings": [], "checks": { "unexpected_changed_elements": 0, "protected_element_count": 15, "preservation_rate": 1.0, "violation_details": [] }, "repairable": false, "suggested_repairs": [] }, "postconditions": { "status": "valid", "errors": [], "warnings": [], "checks": { "expected_effect_count": 2 }, "repairable": false, "suggested_repairs": [] }, "musicxml_roundtrip": { "exported": true, "reimported": true, "validator_valid": true, "issues": [], "warnings": [], "metrics": { "valid_musicxml": true, "musicxml_parseable": true, "music21_parseable": true, "musicxml_exportable": true, "measure_count": 2, "expected_measure_count": null, "measure_count_match": true, "bar_completeness": 1.0, "bar_completeness_score": 1.0, "pitch_range_valid": true, "pitch_count": 16, "empty_measure_count": 0, "rest_only_measure_count": 0, "midi_export_success": true, "pdf_export_success": true } }, "roundtrip_fidelity": { "status": "valid", "errors": [], "warnings": [], "checks": { "source_event_count": 16, "imported_event_count": 16, "missing_event_ids": [], "added_event_ids": [], "field_mismatches": [], "global_mismatches": [], "fidelity_rate": 1.0 }, "repairable": false, "suggested_repairs": [] } }, "sourceFingerprint": "sha256:1c6a4d6e5e473ff92e511ec1b6dca79c13324fd959a88f1372175ddfbf6553c3", "download": "/assets/demo/dynamics_001.musicxml" }, { "id": "key_001", "label": "Key signature", "instruction": "Change the score key signature to G major without transposing notes.", "scope": { "measures": [], "parts": [], "staffs": [], "voices": [], "event_ids": [], "exclude_measures": [], "exclude_event_ids": [], "time_range": null, "whole_score": true }, "status": "generated", "reason": null, "operations": [ { "operation_id": "op_001", "type": "change_key_signature", "selector": {}, "arguments": { "key": "G major" }, "preconditions": [], "expected_change_count": null } ], "diff": { "added": [], "deleted": [], "changed": [], "global_changes": { "key": { "before": "C major", "after": "G major" } }, "changed_element_count": 1 }, "checks": { "schema_version": "1.0.0", "operation_count": 1, "structural": { "status": "valid", "errors": [], "warnings": [], "checks": { "event_count": 16, "measure_count": 2, "operation_ids_unique": true }, "repairable": false, "suggested_repairs": [] }, "preconditions": { "status": "valid", "errors": [], "warnings": [], "checks": { "precondition_count": 0 }, "repairable": false, "suggested_repairs": [] }, "duration": { "status": "valid", "errors": [], "warnings": [], "checks": { "expected_quarters": "4", "voice_end_positions": { "m1:left_hand:v1": "4", "m1:right_hand:v1": "4", "m2:left_hand:v1": "4", "m2:right_hand:v1": "4" }, "voice_coverage": { "m1:left_hand:v1": { "covered": "4", "gaps": [], "collisions": [] }, "m1:right_hand:v1": { "covered": "4", "gaps": [], "collisions": [] }, "m2:left_hand:v1": { "covered": "4", "gaps": [], "collisions": [] }, "m2:right_hand:v1": { "covered": "4", "gaps": [], "collisions": [] } }, "pickup_first_measure_allowed": false }, "repairable": false, "suggested_repairs": [] }, "notation_relations": { "status": "valid", "errors": [], "warnings": [], "checks": { "open_ties": 0, "open_slurs": 0, "chord_onsets_checked": 0, "malformed_chords": [], "event_ids_unique": true }, "repairable": false, "suggested_repairs": [] }, "protected_scope": { "status": "valid", "errors": [], "warnings": [], "checks": { "unexpected_changed_elements": 0, "protected_element_count": 0, "preservation_rate": 1.0, "violation_details": [] }, "repairable": false, "suggested_repairs": [] }, "postconditions": { "status": "valid", "errors": [], "warnings": [], "checks": { "expected_effect_count": 2 }, "repairable": false, "suggested_repairs": [] }, "musicxml_roundtrip": { "exported": true, "reimported": true, "validator_valid": true, "issues": [], "warnings": [], "metrics": { "valid_musicxml": true, "musicxml_parseable": true, "music21_parseable": true, "musicxml_exportable": true, "measure_count": 2, "expected_measure_count": null, "measure_count_match": true, "bar_completeness": 1.0, "bar_completeness_score": 1.0, "pitch_range_valid": true, "pitch_count": 16, "empty_measure_count": 0, "rest_only_measure_count": 0, "midi_export_success": true, "pdf_export_success": true } }, "roundtrip_fidelity": { "status": "valid", "errors": [], "warnings": [], "checks": { "source_event_count": 16, "imported_event_count": 16, "missing_event_ids": [], "added_event_ids": [], "field_mismatches": [], "global_mismatches": [], "fidelity_rate": 1.0 }, "repairable": false, "suggested_repairs": [] } }, "sourceFingerprint": "sha256:76870a85e1d2b89bfad835e8e3c3d5b70ff14a1623c1dcd968ec389cf8b24c16", "download": "/assets/demo/key_001.musicxml" }, { "id": "meter_001", "label": "Meter", "instruction": "Rebar the three-measure excerpt from 4/4 to 3/4 by removing the final quarter-note event from each staff in every measure; preserve every remaining pitch and duration.", "scope": { "measures": [], "parts": [], "staffs": [], "voices": [], "event_ids": [], "exclude_measures": [], "exclude_event_ids": [], "time_range": null, "whole_score": true }, "status": "generated", "reason": null, "operations": [ { "operation_id": "op_001", "type": "change_time_signature", "selector": {}, "arguments": { "meter": "3/4" }, "preconditions": [], "expected_change_count": null }, { "operation_id": "op_002", "type": "delete_event", "selector": { "event_ids": [ "s007_m1_lh_4", "s007_m1_rh_4", "s007_m2_lh_4", "s007_m2_rh_4", "s007_m3_lh_4", "s007_m3_rh_4" ] }, "arguments": {}, "preconditions": [], "expected_change_count": 6 } ], "diff": { "added": [], "deleted": [ { "measure": 1, "measure_id": "m1", "part_id": "piano", "staff": "left_hand", "voice": 1, "event_id": "s007_m1_lh_4", "offset": "3", "before": { "event_id": "s007_m1_lh_4", "type": "note", "pitch": "D3", "duration": "quarter", "offset": 3.0, "voice": 1, "staff": "left_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null } }, { "measure": 1, "measure_id": "m1", "part_id": "piano", "staff": "right_hand", "voice": 1, "event_id": "s007_m1_rh_4", "offset": "3", "before": { "event_id": "s007_m1_rh_4", "type": "note", "pitch": "A4", "duration": "quarter", "offset": 3.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null } }, { "measure": 2, "measure_id": "m2", "part_id": "piano", "staff": "left_hand", "voice": 1, "event_id": "s007_m2_lh_4", "offset": "3", "before": { "event_id": "s007_m2_lh_4", "type": "note", "pitch": "C3", "duration": "quarter", "offset": 3.0, "voice": 1, "staff": "left_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null } }, { "measure": 2, "measure_id": "m2", "part_id": "piano", "staff": "right_hand", "voice": 1, "event_id": "s007_m2_rh_4", "offset": "3", "before": { "event_id": "s007_m2_rh_4", "type": "note", "pitch": "B4", "duration": "quarter", "offset": 3.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null } }, { "measure": 3, "measure_id": "m3", "part_id": "piano", "staff": "left_hand", "voice": 1, "event_id": "s007_m3_lh_4", "offset": "3", "before": { "event_id": "s007_m3_lh_4", "type": "note", "pitch": "A2", "duration": "quarter", "offset": 3.0, "voice": 1, "staff": "left_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null } }, { "measure": 3, "measure_id": "m3", "part_id": "piano", "staff": "right_hand", "voice": 1, "event_id": "s007_m3_rh_4", "offset": "3", "before": { "event_id": "s007_m3_rh_4", "type": "note", "pitch": "C5", "duration": "quarter", "offset": 3.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null } } ], "changed": [], "global_changes": { "meter": { "before": "4/4", "after": "3/4" } }, "changed_element_count": 7 }, "checks": { "schema_version": "1.0.0", "operation_count": 2, "structural": { "status": "valid", "errors": [], "warnings": [], "checks": { "event_count": 25, "measure_count": 3, "operation_ids_unique": true }, "repairable": false, "suggested_repairs": [] }, "preconditions": { "status": "valid", "errors": [], "warnings": [], "checks": { "precondition_count": 0 }, "repairable": false, "suggested_repairs": [] }, "duration": { "status": "valid", "errors": [], "warnings": [], "checks": { "expected_quarters": "3", "voice_end_positions": { "m1:left_hand:v1": "3", "m1:right_hand:v1": "3", "m2:left_hand:v1": "3", "m2:right_hand:v1": "3", "m3:left_hand:v1": "3", "m3:right_hand:v1": "3" }, "voice_coverage": { "m1:left_hand:v1": { "covered": "3", "gaps": [], "collisions": [] }, "m1:right_hand:v1": { "covered": "3", "gaps": [], "collisions": [] }, "m2:left_hand:v1": { "covered": "3", "gaps": [], "collisions": [] }, "m2:right_hand:v1": { "covered": "3", "gaps": [], "collisions": [] }, "m3:left_hand:v1": { "covered": "3", "gaps": [], "collisions": [] }, "m3:right_hand:v1": { "covered": "3", "gaps": [], "collisions": [] } }, "pickup_first_measure_allowed": false }, "repairable": false, "suggested_repairs": [] }, "notation_relations": { "status": "valid", "errors": [], "warnings": [], "checks": { "open_ties": 0, "open_slurs": 0, "chord_onsets_checked": 1, "malformed_chords": [], "event_ids_unique": true }, "repairable": false, "suggested_repairs": [] }, "protected_scope": { "status": "valid", "errors": [], "warnings": [], "checks": { "unexpected_changed_elements": 0, "protected_element_count": 0, "preservation_rate": 1.0, "violation_details": [] }, "repairable": false, "suggested_repairs": [] }, "postconditions": { "status": "valid", "errors": [], "warnings": [], "checks": { "expected_effect_count": 2 }, "repairable": false, "suggested_repairs": [] }, "musicxml_roundtrip": { "exported": true, "reimported": true, "validator_valid": true, "issues": [], "warnings": [], "metrics": { "valid_musicxml": true, "musicxml_parseable": true, "music21_parseable": true, "musicxml_exportable": true, "measure_count": 3, "expected_measure_count": null, "measure_count_match": true, "bar_completeness": 1.0, "bar_completeness_score": 1.0, "pitch_range_valid": true, "pitch_count": 19, "empty_measure_count": 0, "rest_only_measure_count": 0, "midi_export_success": true, "pdf_export_success": true } }, "roundtrip_fidelity": { "status": "valid", "errors": [], "warnings": [], "checks": { "source_event_count": 19, "imported_event_count": 19, "missing_event_ids": [], "added_event_ids": [], "field_mismatches": [], "global_mismatches": [], "fidelity_rate": 1.0 }, "repairable": false, "suggested_repairs": [] } }, "sourceFingerprint": "sha256:17249fc88afc0227dd7079b2ba1635380945d9ba8470ad5aa9fd11a459644e24", "download": "/assets/demo/meter_001.musicxml" }, { "id": "voice_010", "label": "Voice", "instruction": "Move all notes in measure 3 staff 1 from voice 1 to voice 2, preserving pitch and rhythm.", "scope": { "measures": [ 3 ], "parts": [], "staffs": [ "right_hand" ], "voices": [], "event_ids": [], "exclude_measures": [], "exclude_event_ids": [], "time_range": null, "whole_score": false }, "status": "generated", "reason": null, "operations": [ { "operation_id": "op_001", "type": "move_to_voice", "selector": { "event_ids": [ "s017_m3_rh_1", "s017_m3_rh_2", "s017_m3_rh_3", "s017_m3_rh_4" ] }, "arguments": { "voice": 2 }, "preconditions": [], "expected_change_count": 4 } ], "diff": { "added": [], "deleted": [], "changed": [ { "event_id": "s017_m3_rh_1", "before_location": { "measure": 3, "measure_id": "m3", "part_id": "piano", "staff": "right_hand", "voice": 1, "event_id": "s017_m3_rh_1", "offset": "0" }, "after_location": { "measure": 3, "measure_id": "m3", "part_id": "piano", "staff": "right_hand", "voice": 2, "event_id": "s017_m3_rh_1", "offset": "0" }, "changed_fields": [ "voice" ], "before": { "event_id": "s017_m3_rh_1", "type": "note", "pitch": "C5", "duration": "quarter", "offset": 0.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null }, "after": { "event_id": "s017_m3_rh_1", "type": "note", "pitch": "C5", "duration": "quarter", "offset": 0.0, "voice": 2, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null } }, { "event_id": "s017_m3_rh_2", "before_location": { "measure": 3, "measure_id": "m3", "part_id": "piano", "staff": "right_hand", "voice": 1, "event_id": "s017_m3_rh_2", "offset": "1" }, "after_location": { "measure": 3, "measure_id": "m3", "part_id": "piano", "staff": "right_hand", "voice": 2, "event_id": "s017_m3_rh_2", "offset": "1" }, "changed_fields": [ "voice" ], "before": { "event_id": "s017_m3_rh_2", "type": "note", "pitch": "C4", "duration": "quarter", "offset": 1.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null }, "after": { "event_id": "s017_m3_rh_2", "type": "note", "pitch": "C4", "duration": "quarter", "offset": 1.0, "voice": 2, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null } }, { "event_id": "s017_m3_rh_3", "before_location": { "measure": 3, "measure_id": "m3", "part_id": "piano", "staff": "right_hand", "voice": 1, "event_id": "s017_m3_rh_3", "offset": "2" }, "after_location": { "measure": 3, "measure_id": "m3", "part_id": "piano", "staff": "right_hand", "voice": 2, "event_id": "s017_m3_rh_3", "offset": "2" }, "changed_fields": [ "voice" ], "before": { "event_id": "s017_m3_rh_3", "type": "note", "pitch": "D4", "duration": "quarter", "offset": 2.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null }, "after": { "event_id": "s017_m3_rh_3", "type": "note", "pitch": "D4", "duration": "quarter", "offset": 2.0, "voice": 2, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null } }, { "event_id": "s017_m3_rh_4", "before_location": { "measure": 3, "measure_id": "m3", "part_id": "piano", "staff": "right_hand", "voice": 1, "event_id": "s017_m3_rh_4", "offset": "3" }, "after_location": { "measure": 3, "measure_id": "m3", "part_id": "piano", "staff": "right_hand", "voice": 2, "event_id": "s017_m3_rh_4", "offset": "3" }, "changed_fields": [ "voice" ], "before": { "event_id": "s017_m3_rh_4", "type": "note", "pitch": "E4", "duration": "quarter", "offset": 3.0, "voice": 1, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null }, "after": { "event_id": "s017_m3_rh_4", "type": "note", "pitch": "E4", "duration": "quarter", "offset": 3.0, "voice": 2, "staff": "right_hand", "tie": null, "slur": null, "accidental": "", "dynamic": "mf", "articulations": [], "grace": false, "is_chord_tone": false, "chord_group_id": null } } ], "global_changes": {}, "changed_element_count": 4 }, "checks": { "schema_version": "1.0.0", "operation_count": 1, "structural": { "status": "valid", "errors": [], "warnings": [], "checks": { "event_count": 24, "measure_count": 3, "operation_ids_unique": true }, "repairable": false, "suggested_repairs": [] }, "preconditions": { "status": "valid", "errors": [], "warnings": [], "checks": { "precondition_count": 0 }, "repairable": false, "suggested_repairs": [] }, "duration": { "status": "valid", "errors": [], "warnings": [], "checks": { "expected_quarters": "4", "voice_end_positions": { "m1:left_hand:v1": "4", "m1:right_hand:v1": "4", "m2:left_hand:v1": "4", "m2:right_hand:v1": "4", "m3:left_hand:v1": "4", "m3:right_hand:v2": "4" }, "voice_coverage": { "m1:left_hand:v1": { "covered": "4", "gaps": [], "collisions": [] }, "m1:right_hand:v1": { "covered": "4", "gaps": [], "collisions": [] }, "m2:left_hand:v1": { "covered": "4", "gaps": [], "collisions": [] }, "m2:right_hand:v1": { "covered": "4", "gaps": [], "collisions": [] }, "m3:left_hand:v1": { "covered": "4", "gaps": [], "collisions": [] }, "m3:right_hand:v2": { "covered": "4", "gaps": [], "collisions": [] } }, "pickup_first_measure_allowed": false }, "repairable": false, "suggested_repairs": [] }, "notation_relations": { "status": "valid", "errors": [], "warnings": [], "checks": { "open_ties": 0, "open_slurs": 0, "chord_onsets_checked": 0, "malformed_chords": [], "event_ids_unique": true }, "repairable": false, "suggested_repairs": [] }, "protected_scope": { "status": "valid", "errors": [], "warnings": [], "checks": { "unexpected_changed_elements": 0, "protected_element_count": 20, "preservation_rate": 1.0, "violation_details": [] }, "repairable": false, "suggested_repairs": [] }, "postconditions": { "status": "valid", "errors": [], "warnings": [], "checks": { "expected_effect_count": 2 }, "repairable": false, "suggested_repairs": [] }, "musicxml_roundtrip": { "exported": true, "reimported": true, "validator_valid": true, "issues": [], "warnings": [], "metrics": { "valid_musicxml": true, "musicxml_parseable": true, "music21_parseable": true, "musicxml_exportable": true, "measure_count": 3, "expected_measure_count": null, "measure_count_match": true, "bar_completeness": 1.0, "bar_completeness_score": 1.0, "pitch_range_valid": true, "pitch_count": 24, "empty_measure_count": 0, "rest_only_measure_count": 0, "midi_export_success": true, "pdf_export_success": true } }, "roundtrip_fidelity": { "status": "valid", "errors": [], "warnings": [], "checks": { "source_event_count": 24, "imported_event_count": 24, "missing_event_ids": [], "added_event_ids": [], "field_mismatches": [], "global_mismatches": [], "fidelity_rate": 1.0 }, "repairable": false, "suggested_repairs": [] } }, "sourceFingerprint": "sha256:ed4fc7bff036a4c5dc7d6e655bf51b20e65b05abf61d03aa6819ddaa9850d21a", "download": "/assets/demo/voice_010.musicxml" }, { "id": "conflict_001", "label": "Safe refusal", "instruction": "Change measure 1 to 5/8 while preserving every note duration and leaving no rests.", "scope": { "measures": [ 1 ], "parts": [], "staffs": [ "right_hand" ], "voices": [], "event_ids": [], "exclude_measures": [], "exclude_event_ids": [], "time_range": null, "whole_score": false }, "status": "refused", "reason": "Changing meter while requiring all durations to remain unchanged is outside the safe local rule subset.", "operations": [], "diff": null, "checks": null, "sourceFingerprint": null } ], "results": { "tasks": 6, "passed": 6, "failed": 0, "pass_rate": 1.0, "constraint_satisfaction": 1.0, "complete_preservation_rate": 1.0, "musicxml_validity": 1.0, "correct_refusals": 1, "unsafe_executions": 0, "source_preserving_host_export": { "expected": 5, "succeeded": 5, "failed": 0, "rate": 1.0 }, "median_latency_ms": 65.09760000017195, "p95_latency_ms": 1874.3017999997846, "generation_statuses": { "generated": 5, "refused": 1 }, "reproducibility": { "repeated_task_language_groups": 0, "identical_patch_and_output_groups": 0, "rate": null }, "cross_language_equivalence": { "task_groups": 0, "semantic_patch_equivalent_groups": 0, "output_equivalent_groups": 0, "semantic_patch_rate": null, "output_rate": null }, "categories": { "conflicting_or_unsupported": { "tasks": 1, "passed": 1, "failed": 0, "pass_rate": 1.0 }, "dynamics_articulation": { "tasks": 1, "passed": 1, "failed": 0, "pass_rate": 1.0 }, "key_harmony": { "tasks": 1, "passed": 1, "failed": 0, "pass_rate": 1.0 }, "meter_measure_structure": { "tasks": 1, "passed": 1, "failed": 0, "pass_rate": 1.0 }, "pitch_transposition": { "tasks": 1, "passed": 1, "failed": 0, "pass_rate": 1.0 }, "voice_texture": { "tasks": 1, "passed": 1, "failed": 0, "pass_rate": 1.0 } }, "unique_tasks": 6, "scope_stress": { "mode": "exact", "runs_applied": 0, "runs_passed": 0 } }, "claimBoundary": "This demonstration verifies offline product-path behavior and MusicXML round trips; it is not a remote-LLM accuracy or musical-aesthetics experiment." }