Got them from a video recording on a party, so there's a lot of background noise but the songs are clear enough to be identified I think (can't make out the lyrics, though)
I know they're fairly popular since I've heard them a lot, but don't know the singers or the names of the songs.
Here are the links to the MP3 samples:
http://www.4shared.com/mp3/BUWJRUFA/musica001_1-2.html
http://www.4shared.com/mp3/JDFJnM_s/musica002_1-2.html