Sometimes known as "Post-Thrash", "Neo-Thrash", "Power Groove" and ""Groove".
At its core, Groove Metal takes the intensity and sonic qualities of Thrash Metal and plays it at a mid-tempo, with most bands making only occasional forays into fast tempo.
Pantera's Cowboys from Hell album from 1990 was described as "groundbreaking" and "blueprint-defining" for the Groove Metal genre. Ian Christe credits Sepultura's Chaos A.D. and Pantera for creating the Death Metal–derived music of Groove Metal influencing later groups in the genre during the 1990s. Exhorder's debut Slaughter in the Vatican is also considered one of the first Groove Metal albums, having been released in 1990, the same year as Pantera's Cowboys from Hell.
Groove Metal bands have incorporated Thrash Metal, and Crossover Thrash.
Groove Metal utilizes down tuned Thrash riffs. The rhythm, just like Progressive Metal, tends to focus more on the rhythmic side of metal; it features primarily many irregular time signatures and atypical but complex stop-start rhythm structures. Vocals are usually either growled, screamed or Hardcore shouted, placing less focus on the use of clean vocals.
Groove Metal has been associated with bands such as;-
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Anthrax (late-period Bush-era)
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The Groove Metal Effect
Pioneers such as Pantera (originally a Glam Metal and Speed Metal band during the '80s) and Sepultura (originally playing Thrash Metal and Death Metal) laid the foundations for Nu Metal in the '90s and some development of Metalcore in the 2000s.