i'm not much into rap but he did a good job, has a great beat and whatever that bongo type sound is fits in great. voice and lyrics fit right in also. kinda flows and doesn't have a amature sound.

I listen to a lot of different music, and from what I heard I see potential in your son's style.

I prefer the song "It Shows". I don't know if that's your son who raps in the song, but I like the voice and those parts of the song flow pretty nicely. I also like the beat that's used right before the chorus.

Like most of the other posters, I'm not a huge fan of the autotune.

Good luck to your son.
It's good to have a passion for something, keep making music!