Revocation is an American technical death metal band from Boston, Massachusetts. The band was founded by guitarist and vocalist David Davidson, bassist and vocalist Anthony Buda and drummer Phil Dubois-Coyne in 2000. The band was originally known as Cryptic Warning, but it changed its name to Revocation in 2006. The band has released four studio albums, Empire of the Obscene, Existence Is Futile, Chaos of Forms, and their most recent self-titled album, Revocation, in 2008, 2009, 2011, and 2013 respectively, and subsequently signed to Relapse Records. They have also released a free EP, Teratogenesis, with Scion A/V in 2012.