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"arrangement" is also used as a crossword clue. If that's what you saw, the answer is often layout (6 letters).
Definitions
the act of arranging and adapting a piece of music
Word origin
From French arrangement. Morphologically arrange + -ment.
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Organized setup”11 letters
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