{'fraction_non_alphanumeric': 0.01277139208173691, 'fraction_numerical': 0.001277139208173691, 'mean_word_length': 4.850746268656716, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Background and Rock Aesthetics

Chapter 1 gives historical and aesthetic context to the topic at hand. It begins with a brief description of the long-standing relationship between popular song and theatre song, and places both popular music and musical theatre in the realm of folk art. There is a brief review of the history of modern popular song and of musical theatre, and specification of the changes that the advent of rock music heralded in both industries. Next is a brief survey of rock music in the theatre, and the sometimes uncomfortable relationship between rock music and theatrical content and performance. Last is a discussion of rock aesthetics, which helps the reader understand the artistic basis of rock music and begin to apply this understanding to performance.