Question: who sang the song let the sideshow begin
[{'answer': 'Blue Magic', 'provenance': [{'wikipedia_id': '8411101', 'title': 'Sideshow (song)', 'start_paragraph_id': 1, 'start_character': 65, 'end_paragraph_id': 1, 'end_character': 75, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '8411101', 'title': 'Sideshow (song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 501, 'bleu_score': 0.9587516899818641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11256132945759295845}, 'section': 'Section::::Abstract.'}]}]