YOU SAID:

Ok I think I'm gonna have to come in my concert

INTO JAPANESE

わかりました私は私のコンサートに来なければならないと思う

BACK INTO ENGLISH

Ok i think i have to come to my concert

INTO JAPANESE

私は私のコンサートに来なければならないと思う

BACK INTO ENGLISH

I think I have to come to my concert

INTO JAPANESE

私は私のコンサートに来なければならないと思います

BACK INTO ENGLISH

I think I have to come to my concert