DEFICIENCY is a French Melodic Thrash Metal band founded in 2009. Both influenced by classic Thrash Metal bands and new waves of Metal music, DEFICIENCY gives a strong alliance between traditional and modern Metal styles. The band released 3 well recieved concept-albums and played in major european venues with international headliners (Machine Head -USA, Testament -USA, Evile -UK, Napalm Death -UK, Decapitated -PL…), lined up many festivals (Motocultor, Rock Your Brain Fest) and toured with Suicidal Angels -GR- and Angelus Apatrida -SP-.