Question: who wrote the music for rocky horror picture show
[{'answer': 'Richard Hartley', 'provenance': [{'wikipedia_id': '25491', 'title': 'The Rocky Horror Picture Show', 'start_paragraph_id': 28, 'start_character': 606, 'end_paragraph_id': 28, 'end_character': 621, 'bleu_score': 1.0, 'section': 'Section::::Production.:Concept and development.\n'}]}, {'answer': "Songs : </Li> <Li> Richard O'Brien"}]