YOU SAID:

Alright, fine, the four of you can sing a quartet

INTO JAPANESE

大丈夫、大丈夫、4人でカルテットを歌える

BACK INTO ENGLISH

Okay, okay, you can sing a quartet with 4 people

INTO JAPANESE

さて、さて、あなたは4人でカルテットを歌うことができます

BACK INTO ENGLISH

Well, now you can sing the quartet with 4 people

INTO JAPANESE

さて、今あなたは4人でカルテットを歌うことができます

BACK INTO ENGLISH

Well, now you can sing a quartet with 4 people

INTO JAPANESE

さて、今あなたは4人でカルテットを歌うことができ

BACK INTO ENGLISH

Well, now you can sing a quartet with 4 people