There are at least six bands with the name "Anti" and two artists. 1) A Depressive black metal band from Germany (Leipzig).
2) ANTI Hardcore Punk band from the South Bay California seen, active since the late 70's.
3) A Greek Punk - New Wave band, active in the early 80's. See Αντί.
4) A Polish Black Metal band formed in 2009, released Resurrection Of The Beast - demo, in 2010
5) Electronic experimental artist of 2006 onwards.