List and appraise a piece of music base on timbre ​​

How can i use models to find part of a number hands on part of a number

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.

Why did david smith burnish the surface of his work cubi xix?