YOU SAID:

he sings crazy good. I don't mean his voice, though that is really good too, but the pure emotion he poured into this.

INTO JAPANESE

彼は良いクレイジーを歌っています。私は、それはあまりにも、本当に良いけど、純粋な感情、彼はこれに注いだ彼の声を意味しません。