Berto : Extreme OD is an new English death metal band with a female vocalist but that only becomes clear when reading the bio. The lady can grunt like any of her male colleagues. Their demo ‘Contaminate’ consists of three songs with first song ‘Contaminate’ being a straight forward thrash metal song without any variation but ‘Disillusioned’ is already a bit more diverse. The death metal is really coming through here and they slow down at the right moment for better impact. It is like the band is working towards a climax because closer ‘Erase The Lie’ is the really mature song with great guitarwork. If they continue like this a full album would be advised.