This effort by Tyler basically put him on the map, as I doubt many film score fans knew him before then, much less the public in general.
The first track "Summon the worms" is, as most other reviewers have mentioned, simply astounding in its originality and power. Tracks 3 and 6 are also hallmarks of the album. Far from resting on his laurels for the remainder of the album, however, Tyler sustains the efforts through 30+ tracks in order to produce one of my hands-down, no-contest favorite CD's ever.
In short, if you were looking for an intelligently written action soundtrack, composed by someone who managed to sneak in incredible music under Hollywood's "If-It-Ain't-James-Horner-It-We-Can't-Sell-It" radar (aka Troy Rejected Score Syndrome), Children of Dune is quite simply a must-have.