(1)(専門職として)楽器を演奏する人
(2)someone who plays a musical instrument (as a profession)
さらに詳しく
(1)物事の好ましい面をとりがちな人
(2)a person disposed to take a favorable view of things
(1)劇場の楽屋裏の掲示板
(2)a bulletin board backstage in a theater