Question: if a piece of music is perceived to have changed key then we say the piece has
[{'answer': 'transposed', 'provenance': [{'wikipedia_id': '54783', 'title': 'Music theory', 'start_paragraph_id': 79, 'start_character': 272, 'end_paragraph_id': 79, 'end_character': 282, 'bleu_score': 1.0, 'section': 'Section::::Fundamentals of music.:Scales and modes.\n'}]}, {'answer': 'transposition', 'provenance': [{'wikipedia_id': '54783', 'title': 'Music theory', 'start_paragraph_id': 79, 'start_character': 382, 'end_paragraph_id': 79, 'end_character': 395, 'bleu_score': 1.0, 'section': 'Section::::Fundamentals of music.:Scales and modes.\n'}]}, {'provenance': [{'wikipedia_id': '54783', 'title': 'Music theory', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17309318645473583612}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '54783', 'title': 'Music theory', 'start_paragraph_id': 79, 'start_character': 0, 'end_paragraph_id': 79, 'end_character': 1032, 'bleu_score': 0.987987443031558, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17309318645473583612}, 'section': 'Section::::Fundamentals of music.:Scales and modes.\n'}]}, {'provenance': [{'wikipedia_id': '668181', 'title': 'Transposition (music)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['In music, transposition refers to the process or operation of moving a collection of notes (pitches or pitch classes) up or down in pitch by a constant interval', 'In music, transposition refers to the process or operation of moving a collection of notes (pitches or pitch classes) up or down in pitch by a constant interval. For example, one might transpose an entire piece of music into another key.', 'transposition refers to the process or operation of moving a collection of notes (pitches or pitch classes) up or down in pitch by a constant interval.']}}]}]