10 PTS! HELP! What is the medium used in this artwork?

Well i might get reported for putting this out here buutt why do we all have to bow down to a greater being? yes i accept that there is someone higher that keeps most people going but for me its like something to throw to keep one in their what is the purpose of a religion and why do they always throw that if one dosent obide by the lord he will shun them?

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 type of sound does a director of a theatrical prodyction not want?