他们开始在一些电影院取代现场管弦乐队，而且只需要一个人来演奏一个风琴。

They were starting to replace live orchestras in some movie theaters, and it only takes one person to play an organ.

youdao

演奏这一段音乐需要有很高的技艺。

It is a technically demanding piece of music to play.

《牛津词典》

我们需要一名钢琴演奏家对吗？

We need a pianist, don't we?

youdao

Let's say oftentimes orchestral musicians, they're sitting there and they're not playing so they have to be able to count for a long period of time.

时常,管弦乐团的乐手们坐在那里,却不需要演奏,因此他们不得不打很长一段时间的拍子

耶鲁公开课 - 聆听音乐课程节选