An orchestra: a large ensemble composed of wind, string, and other instruments (commonly synonymous with 'orchestra').
市の管弦楽団が来月、定期演奏会を開く。
The city's orchestra will hold a regular concert next month.
彼はその管弦楽団で第一ヴァイオリンを務めている。
He serves as the first violinist in that orchestra.
プロの管弦楽団はツアーで各地を回ることが多い。
Professional orchestras often tour around various regions.