Before even entering the musical realm, the Mezmerize/Hypnotize set shows it's cohesiveness in the cover art. The two discs actually fit together (Which will explain to everyone why Mezmerize was opening opposite of a normal disc) and create a "cohesive package" (According to the insert found in Hypnotize). When both discs are opened when they're fit together, you get a complete view of the artwork inside. The two halves are completed when put together. It's one of the most innovative cover art schemes in quite some time (It takes what Nelly did with his two discs (Putting half of his face on each cover) to an entirely new and far more impressive level).
But cover art only does so much. What matters most is the music. And the lead single and title track, Hypnotize, is quite intriguing for it's different state from other System tracks. This one has a unique vibe, which is saying a lot for a System track, a band that provides some pretty unique tracks throughout all of their discs. Lyrically, it contains the politically driven stuff fans have come to either love or hate. Either way, however, the song is impressive.
The rest of the disc does not quite hold to the same standard, however. This is not to say that all the other tracks suck, far from it. Many tracks, like U-Fig, Holy Mountain and Kill Rock 'N Roll take on a sound befitting of a System disc. The tracks also have solid lyrics that vary from the amusing to the politically driven to the simply strange. Other tracks leave a bit to be desired, such as Vicinity Of Obscenity, which is one of those songs that is simply strange. The music is intriguing and impressive at times, but the lyrics are just...odd. Half the song is Banana banana banana terrocotta/Banana terrocotta terrocotta pie. Not exactly an insightful track. And She's Like Heroin is not much better, speaking of whores and selling heroin (With music that's just above average, far from what is expected of System).
Returning to the idea of the two releases being cohesive, Hypnotize ends with Soldier Side, a track that had it's introduction all the way back on the first track of Mezmerize. This turns out to be one of the better tracks on the two discs. The lyrics are basically an indirect cry out against war (Not any particular war; the men of System, whether you agree with their politics, at least deserve credit for sticking to one side of the debate at all times). Musically, it is a slower track that allows the lyrics to push forward, which is what helps it become one of the stronger songs on the disc.
Overall, Hypnotize is another solid effort. It definitely completes the package that began with Mezmerize. The title track is easily the best track on the disc, followed closely by the song that began and ended this saga. There are no major flaws on the disc, the biggest complaint to be found is that there are very few tracks that stand out like many other System Of A Down tracks normally do. But, all in all, the disc is a worthwhile effort.