This duet works perfectly. These two amazing artists bounce off each other singing the same words in their respective languages. Often translation in songs don't work well - but this is a pleasant exception.
From Wikipedia: "Harper's collaboration "Boa Sorte/Good Luck" with Brazilian singer Vanessa da Mata peaked at #1
in Brazil and Portugal. In Brazil it also won a highly coveted Prêmio Multishow for "Best Song" in 2008."
I also remember reading somewhere a while back that they wrote this song together from a distance over skype.