I know only a few about these guys,Faixa de Faza (Gaza band) is a thrashing hardcore bands from Brazil including former members if Restrained Opposition in their ranks. This is their demo recorded in 2008, it consists 15 tracks and is about nine minutes long.
In their myspace they mention Diskonto, Dropdead, Krigshot, Disrupt and many other acts so you know the pathway they walk on...
xGarrafax (vox) runs Hardcore Ouca E Circule blog and has posted tons of brutal stuff
and some more new tracks, recorded a few days before (March 6,2009), here
thanks to xGarrafax, cheers dude