YOU SAID:
Never gonna give you up! Never gonna let you down!
INTO JAPANESE
あなたをあきらめるつもりはない! 決してあなたを失望させるつもり!
BACK INTO ENGLISH
Not going to give up on you! Will never let you down!
INTO JAPANESE
あなたをあきらめるつもりはない!決してあなたを失望を!
BACK INTO ENGLISH
Not going to give up on you! never let you down!
INTO JAPANESE
あなたをあきらめるつもりはない!決してあなたを失望!
BACK INTO ENGLISH
Not going to give up on you! never let you down!
That didn't even make that much sense in English.