Music journalists and fans have used groove metal to describe Pantera , Exhorder and Machine Head .
Groove metal ( also known as post-thrash or neo-thrash ) is a subgenre of heavy metal music .
Music journalists and fans have used subgenre   to describe Pantera , Exhorder and Machine Head .
Groove metal ( also known as post-thrash or neo-thrash ) is a subgenre of heavy metal music .