Question: who is mike's singing voice in sing
[{'answer': 'Seth MacFarlane', 'provenance': [{'wikipedia_id': '47415762', 'title': 'Sing (2016 American film)', 'start_paragraph_id': 1, 'start_character': 245, 'end_paragraph_id': 1, 'end_character': 260, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]