Pantera's sixth album, , marked a major breakthrough, as they transitioned from glam metal to a more aggressive, groove-oriented sound. This album's success was fueled by hits like "Prison Song" and "Cowboys From Hell," propelling the band into the mainstream. The follow-up albums, "Vulgar Display of Power" (1992) and "Far Beyond Driven" (1994) , continued this trend, cementing Pantera's status as one of the leading heavy metal bands of the 1990s.