It is ',' a duet sung by Susanna and the Contessa.

Chesoavezeffiretto’苏珊娜孔德萨的二重。

I sang a duet at a Karaoke bar.

在卡拉ok厅二重。

Do anyone want to sing a duet with me?

有没有要跟二重？

I sing with someone in duet.

二重。