It seems that new producer made a good effort to bring those boys back; is not only the look, looks like they try to mix old sounds mainly from metal, in parts of the album you cannot forget Metallica's first gigs but also now extinct Pantera's first days, but latter on the album you can find same old good things.The single What I've Done is simply a song in the middle of the sound of the album, probably the experimentation is the key of this album, no bad all at, and perhaps not to use the same receipt of the previous albums.I like the present track, which has many elements of old metal and the so called NU metal.enjoy.guSo