Check out a song like "Refuse/Resist" and you'll find that they totally mellowed out, which isn't totally a bad thing, just a sad ending to a legend that turned rancid. The guitars are thick, but the innovative riffs that were amongst them in their earlier days just are no more. I wouldn't consider the band to be called "Sepultura" because this is no Sepultura to me, et al. What counts here is music, but if you want to call it thrash metal, I think that it would be a mistake. They used to come up with the most intriguing and aggressive songs and yet they put out something like this. They should've just changed their name like Metallica should've.
No progression, just regression, stick with the old stuff. This is just a waste, you really have to be in the mood to listen to something mild, but even so, pretend that their name wasn't Sepultura. An evolution? A destruction. A destruction of talent that they once had, musically the album isn't an entire waste. I could tolerate 3-4 songs then I have to turn it off in utter dismay. Sad to hear such a great band that gave up in the thrash metal community. Many bands went to hell, but this decline was as obvious as I've said Metallica's decline as well. If you want heavy metal, I'd say this is more fits in that genre.
The music contains just bar chords slapped together with some severe solos, plus a bunch of acoustic riffs during some songs and overall an obliteration of the band. Maybe it's a money thing or maybe they ran out of ideas. It could be both, but now that Max is officially done with the band, I say RIP to them with vigor. Bands that don't decline over time are ones to follow with each succeeding album. But bands like Sepultura you never would expect a death (1st) metal origin, then thrash, then like groove metal. It's kind of weary and a waste, unless you feel like listening to half assed crap.
Don't make a mistake and investing in this release because what you don't get is thrash metal, you get a non-super Sepultura. It's more like they as a band went to the grave with this one. Pardon the pun, but really, check out some songs on YouTube. If you like more groove oriented bands, this will hit home. But if you're expecting thrash metal, you won't get it here. It's completely non-existent. In all reality, we hear of Sepultura and think "yeah, they rock the hardest!" Well, "Chaos AD" doesn't rock if you expect like I said thrash, it's totally a decline and end of the band in general. So to me they're officially "dead."