South America has always been very supportive of Heavy Metal over the years.  Bands like Iron Maiden do shows there that attract crowds as big as any mainstream act.

Brazil has always been one of the biggest countries around the world for Metal and Angra for awhile was one of the better known Progressive Metal bands.  They paved the way in the 90's during the lean years for other bands to succeed.

Angra had problems like other bands have had like keeping a consistent lineup.  Vocalist Andre Matos was perhaps the most well-known over the years, he has continued with a solo career.

Here's a video they did back in 2006 after their heyday, but it still proves they were able to put out some amazing Metal.