|Cultural origins||Early 1990s, United States and Brazil|
|Derivative forms||Nu metal|
Groove metal (also known as post-thrashor neo-thrash) is a subgenre of heavy metal music. Music journalists and fans have used groove metal to describe Pantera, Exhorder and Machine Head. At its core, groove metal takes the intensity and sonic qualities of thrash metal and plays them at 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.King's X has been called the progenitors of the genre and their 1988 debut album Out of the Silent Planet is often cited as one of the major influences for groove metal, with dropped open tuning and lower, even tempos. 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 Cowboys. Groove metal bands have incorporated thrash metal, and crossover thrash. Tommy Victor of Prong claims that the attitude of groove metal came from Bad Brains.
The style has been associated with bands such as Machine Head, Pantera, Exhorder , White Zombie, Fear Factory, King's X, Lamb of God, Sepultura, Soulfly, Cavalera Conspiracy, Gojira, Throwdown,Nevermore, Byzantine, late-period John Bush-era Anthrax, Spiritual Beggars, Texas Hippie Coalition, and Five Finger Death Punch. Veteran thrash metal band Annihilator got let go by Roadrunner Records in 1993 when the groove metal trend began being promoted by the label. During the 1990s, the term was occasionally used to describe funk-influenced alternative metal acts such as Primus and Jane's Addiction.
Pioneering groove metal bands such as Pantera (originally a glam metal and speed metal bandin the 1980s) and Sepultura (originally playing thrash metal and death metal ) laid the foundations for nu metal in the 1990s and some development of metalcore in the 2000s. Nu metal is an alternative metal subgenre which utilizes downtuned riffs, a more hip hop influenced beat accessible to rapping and turntablism and groove metal rhythms, while frequently lacking guitar solos and complex picking. Metalcore emphasizes general heavy metal characteristics as well as breakdowns, which are slower, intense passages that are conducive to moshing.
As close to death metal as any other gold-selling record before it, Chaos A.D. stripped down Sepultura's sound into a coarse metallic loop. The CD sold half a million copies, and alongside Pantera the band forged a streetwise, death-derived groove metal that inspired an upcoming generation of mavens in the 1990s.
The best part of every metalcore song is the breakdown, the part where the drums drop out and the guitars slow their frantic gallop to a devastating, precise crunch-riff and everyone in the moshpit goes extra nuts.
Howie Abrams (NYHC scene): Mosh style was slower, very tribal – like a Reggae beat adapted to Hardcore. (...) It was an outbreak of dancing with a mid-tempo beat driven by floor tom and snare.