What is the most important concept in greek art?

It is the Greek geometric period art .The Greek geometric period art is important because the doctrine brought an end to helladic culture and because at that time greece entered into a period of cultural darkness.

Answerthe third and fourth;

His contribution to the orchestral genre mainly lies with foreshadowing ideas that are to come like the emergence of the classical symphony, the cadenza for a keyboard, and paired instrumentation;