When Brazil hosted the original Rock In Rio in 1985 it solidified Latin America's ties with heavy metal as a genre, cementing the region as a new destination for bands looking to adoring crowds away from the usual routes of Europe and the US. But while the region has boasted a bubbling undercurrent of underground scenes (from black and death metal to thrash, heavy metal and beyond) in the near-four decades since, very few bands from Latin America have become household names in metal, with Sepultura seemingly the only band to threaten to genuinely cross over into the mainstrea...