YOU SAID:
tonight tonight there’s a party on the rooftop top of the world
INTO JAPANESE
今夜今夜は世界の屋上でパーティーがあります
BACK INTO ENGLISH
Tonight there will be a party on the roof of the world tonight
INTO JAPANESE
今夜は今夜世界の屋根の上にパーティーがあるでしょう
BACK INTO ENGLISH
Tonight there will be a party on the roof of the world tonight
That didn't even make that much sense in English.