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After first arriving in new york, charlie parker took a job as a dishwasher at jimmy's chicken shack, where played the piano nightly. listening to his astonishing harmonic restructuring, virtuoso phrasing, and breakneck tempos every night for three months, charlie parker challenged himself to adopt these qualities into his playing, and he continued to practice tirelessly.

What made this representation of the virgin mary revolutionary

Which style of polyphony uses a borrowed chant and arranges several new melodies and texts above and unrelated to the chant?