Black Sabbath , Iron Maiden , Judas Priest , and Motorhead are some of Machine Head 's influences .
The band is influenced by Californian thrash metal bands such as Vio-lence , Metallica , Exodus , Slayer and Testament , crossover thrash bands Suicidal Tendencies and Cro-Mags , groove metal bands Pantera and Exhorder , and grunge bands Nirvana , Soundgarden and Alice in Chains .
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