Not sure why they come and go, but UMG has uploaded Pais Tropical tracks again, though they're under "Various Artists" for some reason, and somewhat hilariously I couldn't find "I Know You," my least favorite track on that album (links not in album order):
Morro Velho
Zanzibar
Tonga (A Tonga Da Mironga Do Kabulete)
After Midnight
Asa Branca
Morro Velho
Zanzibar
Tonga (A Tonga Da Mironga Do Kabulete)
After Midnight
Asa Branca