YOU SAID:
I play guitar for an amazing rock band
INTO JAPANESE
私は素晴らしいロックバンドのためにギターを弾きます
BACK INTO ENGLISH
I play the guitar for a great rock band
INTO JAPANESE
私は偉大なロックバンドのためにギターを弾く
BACK INTO ENGLISH
I play the guitar for a great rock band
That didn't even make that much sense in English.