YOU SAID:

once upon a time there was a music mouse who made marvelous muffins

INTO JAPANESE

昔々素晴らしいマウスを作った音楽マウスがいました

BACK INTO ENGLISH

Once upon a time there was a music mouse that made a great mouse

INTO JAPANESE

昔々素晴らしいマウスを作った音楽マウスがありました

BACK INTO ENGLISH

Once upon a time there was a music mouse that made a great mouse