IS SOMETHING WRONG WITH WITH THE WEEKEND LIKE WHY IS HIS FACE BLOODY AND EVERYTHING?

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.

Look at this painting by cimabue. this painting demonstrates the use of

How did the scholars date the mosaic?