Choppa is an artist from Mozambique. Here is the second track from his album "Batukeiro". I believe he sings in Portuguese.
http://www.amazon.com/Batukeiro-Choppa/dp/B00005LNYR/ref=sr_1_1?ie=UTF8&s=music&qid=1308203865&sr=8-1
And here is a video of the same song: http://youtu.be/p9YaCFkua34
