唱歌通常是舞蹈节目中的一部分，而观察者也有机会观察到是谁在唱歌以及其声音特质如何。

Frequently singing is part of a dance program, and again an observer has an opportunity to observe who is singing and the nature of the voices.

youdao

昨晚是谁在唱歌? （就主语提问）——是汤姆。

Who was singing last night? —Tom was singing last night.

youdao

听，是谁在唱歌？

Listen! Who is singing?

youdao

“失眠…聼，是谁在唱歌？”“心痛并快乐着，愈快乐就愈寂寞。”

We had joy, we had fun, we had seasons in the sun…

youdao

“失眠…聼，是谁在唱歌？”“心痛并快乐着，愈快乐就愈寂寞。”

We had joy, we had fun, we had seasons in the sun…

youdao