- curtain-raiser (to something)
a small event that prepares for a more important one (重大事件的)前奏,序曲 - curtain-raiser (to something)
a short performance before the main performance in a theatre, etc. (剧院等主要剧目演出前的)序幕,开场小戏
Word Originlate 19th cent.: originally used in the theatre to denote a short opening piece performed before a play.