It's a difficult piece to play, full of sharps and flats.

这支乐曲不好演奏，到处是升半音、降半音。

《牛津词典》

It is a technically demanding piece of music to play.

演奏这一段音乐需要有很高的技艺。

《牛津词典》

youdao

When she was about four years old, she heard her mother struggling to play a piece of music on the piano.

VOA: special.2010.04.09

Now here's piece two: All right. So here's one if--I'm going to play it again.

接下来是曲目二,好的,曲目一,我再弹一遍

耶鲁公开课 - 聆听音乐课程节选

Let's say I went to play a piece music Now I didn't think about that.

假如我弹了一段曲子,但我之前没有听过

耶鲁公开课 - 聆听音乐课程节选

Officers said the three-year-old had suffered serious injuries after becoming tangled in a piece of play equipment.

BBC: Child dies after play area accident at York College

Liverpool found joy down the flanks and an inventive piece of play by Aquilani almost brought the opening goal.

BBC: Liverpool 0-0 Fulham

But within two laps Kubica passed him into the first corner in what looked like a co-ordinated piece of team play as BMW Sauber tried to maximise their chances.

BBC: Kubica wins after Hamilton error