noun
arranger; orchestrator
A person who arranges music, adapting a composition for different instruments or style. Used in professional and hobby contexts.
彼は有名な編曲家として知られている。
He is known as a famous arranger.
この曲の編曲家は誰ですか？
Who is the arranger of this piece?
編曲 is the act or result of arranging; 編曲家 is the person who does it.
Compound of 編曲 (arrangement) + 家 (-er, specialist).