Usually 1 referee and 2 referee assistants. Hope this helps!
Answer:
Vincent van Gogh
Explanation: He cut off his left ear when tempers flared with Paul Gauguin, the artist with whom he had been working for a while in Arles.
I believe the answer is Rubato, when composers slightly slow down or speed up the tempo of the music
Answer: a color wheel is a representation of colors that are arranged by their chromatic relationship, you can use color wheels in different ways one being that you can use it help show you complementary colors, or help you choose what colors you want to use on your art.
