I sound jamaican, but only when music is playing

Shaggy, is a popular rapper from the 90s. I had no idea he had a normal sounding voice.

Here is shaggy
Shaggy - Boombastic - http://www.youtube.com/watch?v=6W5pq4bIzIw
Shaggy - It Wasn't Me http://www.youtube.com/watch?v=cQ4axo9rmJY

I just figured, he would sound Jamaican when talking in a normal voice. He would be "Hay Mon, ...What happ'nin....boomboloa". Wow....he's good.

(Shaggy in an interview) http://www.youtube.com/watch?v=ZBX0UyAL_fY