There are more than one artist with this name :
Deviance is a Melodic Death Metal band from The Netherlands. They have released one demo called "Visions of Sorrow", containing three tracks.
A one-man Progressive/Technical Death Metal founded by Michael Uhlig from Louisville, Kentucky. Had released their first full-length album in 2015 entitled "A New Planetary Perspective".
There is also a disbanded german rock band called Deviance.
Deviance is also a progressive metal/djent band from Vellore, India.
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