Describe the four shading techniques

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.

In which quotes does the author use the word "chains" literally? in which quotes does she use the word figuratively?

What is the angular extent of an image captured by a camera called?