Dictionary / Vocabulary / 奏す
そうす
to report to the Emperor; to play (musical instrument); to accomplish
解決策が功を奏したのは試行錯誤の結果だった。
Finding a solution that worked was a process of trial and error.
レーガン大統領の税政策はまだ功を奏していない。
President Reagan's tax program has not worked.