Roscoe Mitchell quote ✍️

Quote

My central quest was to have a piece played on the saxophone sound like more than one instrument, exploiting different registers and wide interval leaps.
Section of a curve
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A
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R
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C
Hint 1 meaning
The apparent arc described, above or below the horizon, by the sun or other celestial body. The diurnal arc is described during the daytime, the nocturnal arc during the night.
Hint 2 anagram
RCA
Hint 3 another clue
AID WHEN GOING TO COURT
8 +2

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