YOU SAID:
In the mirror I'm doing my dance
INTO JAPANESE
鏡の中で私はダンスをしている
BACK INTO ENGLISH
in the mirror i'm dancing
INTO JAPANESE
鏡の中で私は踊っている
BACK INTO ENGLISH
i'm dancing in the mirror
INTO JAPANESE
私は鏡の中で踊っている
BACK INTO ENGLISH
i'm dancing in the mirror
You've done this before, haven't you.