Question: what instrument does stephen colbert's band leader play
[{'answer': 'Piano', 'provenance': [{'wikipedia_id': '16897736', 'title': 'Jon Batiste', 'start_paragraph_id': 3, 'start_character': 262, 'end_paragraph_id': 3, 'end_character': 267, 'bleu_score': 1.0, 'section': 'Section::::Career.\n'}]}, {'answer': 'voice'}, {'answer': 'melodica'}, {'answer': 'electric bass'}, {'answer': 'Hammond organ'}]