Thanks! The pirate pack is one of the few that I never ported over from other platforms. And the reason is... there actually is no particular reason. I really ought to do that. Even though it is a very old pack it still has one of my favorite tracks in it. I wish there was a commercially viable reason to compose another whole new Pirate pack, it's fun music. I'll try to get the original one over here soon.
I don't have a whole lot of distinctly South American music. There are a couple tracks in my Grand Adventure pack like this one:
https://on.soundcloud.com/3WntUhVpGgkdhh468
there are a few that are creepy, a couple that are more generally atmospheric. And a lot of the pack is more typical cinematic music, but watch the video trailer, too, and you'll hear a few clips in that style.