How Far Can Nostalgia Take You?
The soundtrack to Dissidia: Final Fantasy is difficult to review since, very much like the PSP title itself, your enjoyment of the music is very much dependent on your history with the Final Fantasy series.
As a long time, die-hard FF nut, I found this soundtrack (as well as the game's concept) fantastic. But to someone who's listening to this soundtrack without prior knowledge of the FF lore, much of its beauty might be lost.

That said, the Uematsu tunes are classics for a reason. Whether you're hearing them for your first time or not, they sound great, but taken out of context some of the magic is lost. The problem lies less in the overall quality of the music, and more on the lack of innovation.
The covers are, essentially, fantastic, with the FFIV Theme being one of my faves, and the original tracks are also of high quality.

If you're looking for a "Best Of" Final Fantasy, you could do much worse than this. But otherwise, you're probably better with the original soundtracks from the individual Final Fantasy games.

Great Compilation Disc, Not Totally Enjoyable
Like the game itself, the Final Fantasy: Dissidia Soundtrack is a mash-up of all the best the series has to offer musically from games 1-10. Unfortunately, a lot of the songs have been remixed to where they aren't enjoyable. On the other hand, many songs have been remixed to be even more enjoyable than their originals. There are also a few songs, particularly from the later games in the series, which are left untouched from their original soundtrack versions. So music-wise, this score is kind of a wash.

The packaging is excellent and definitely for the avid collector. One side of the packaging representing Chaos (Evil) and the other Cosmos (Good).

Ultimately I recommend this for the fact that it is the best "Best of Final Fantasy Music" collection you're going to get.

Nostalgic
This soundtrack is just full of pumped up versions of familiar tunes. Really an enjoyable listen!

Old Memories
This is definetly worth the wait and anticipation! Containg at 55 tracks are songs composed and recycled from FF1 ~ FF12... mainly, the main themes and battle themes we're all used to. Though on the second disc, there is quite some disappointment; most of the tracks are original but then again, in its original state, it gives a sense of "memories" when playing the game, I guess. The only thing I didn't like about disc 2 was the fact of the remake of "Over the Hill" for FFIX. It sounded... strange. Some of the songs, I wished they had remade it like, "The Extreme" for FFVIII and "Battle 2" for FFIX; in my opinion, they should have used "Evil Messenger" for that and remixed... Otherwise, everything is 5 stars from here on!

Dissidia by FAR is wonderful in terms of its game and music. It's fun to play to themes that we're all used to; makes it THAT much more fun!

A must-have for fans
This is an incredible soundtrack, complete with original versions and remixes of the best world map music and battle themes from every game in the series. And the original Dissidia tracks are relaxing one minute, pulse-pounding the next. A perfect trip down memory lane for longtime fans of the series.

To top it all off, this set contains not only "Cosmos" and "Chaos" by Your Favorite Enemies, but also the bonus track "The Messenger." If you enjoy hard rock with beautiful male and female vocals, you'll probably enjoy these songs.

I can't recommend it enough. A wonderful addition to the RPG fan's music collection.