Question: when the sounds in a composition are left to chance we call this type of music
[{'answer': 'aleatoric music', 'provenance': [{'wikipedia_id': '65954', 'title': 'John Cage', 'start_paragraph_id': 78, 'start_character': 626, 'end_paragraph_id': 78, 'end_character': 641, 'bleu_score': 1.0, 'section': 'Section::::Reception and influence.\n'}]}, {'provenance': [{'wikipedia_id': '65954', 'title': 'John Cage', 'start_paragraph_id': 78, 'start_character': 0, 'end_paragraph_id': 78, 'end_character': 759, 'bleu_score': 0.9030296229240671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14392104967580922543}, 'section': 'Section::::Reception and influence.\n'}]}]