“It takes one monster to fight another.”

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.

Ashape is a three-dimensional form or a two-dimensional form?

Explain briefly why it's to choose a chord progression before developing the harmony.