As far as I can tell Concentrate the Annihilation is debut full-length from Thai death metallers Deathguy. Style wise the band could be compared to bands like Disgorge [Mexico], Krisiun and old Deranged. The songs are superfast with ultra low guttural growls. This gets kind of monotone quite fast as the music appear very one-tracked most of the time. There's really not a whole lot of variation on Concentrate the Annihilation and this makes it rather strenuous to listen to for a longer period.

If the band had used a little more time on making the songs a bit more detailed then I'm sure the album would have been for the better as it's quite clear that Deathguy isn't a bad band. Concentrate the Annihilation doesn't really offer anything remotely memorable as it appear a little too same-sounding and thus the low grading. Since Concentrate the Annihilation was released in 2004 the band have recorded some new material which has been issued on the four way split Siamese Brutalism Assault!!, but whether this shows improvement or not I do not know.