This disc doesn't contain all of Varese's music, but it comes close at 77 minutes. Varese was not nearly as prolific as he was creative! The first recorded Varese I heard was on the VoxBox (called "Ionisation"), and five of the pieces found here are also on that disk, conducted by Cerha. What a contrast! Cerha presents Varese delicately, transparently, without passion. The advantage is that the instruments are clearly delineated. But you are left wondering what the fuss is about -- it doesn't sound very radical. Boulez emphatically captures the chaos, the energy, the alien-ness of Varese! Of course the overall impact is heightened by the inclusion of "Ameriques" and "Arcana," two 20-minute pieces for full orchestra that are bigger and louder than anything included on the VoxBox. The production value is superb -- sharp and clear -- and the packaging is faultless as well. In short, if you only had one recording by Varese, this would be an excellent choice. If you like this, by all means look for Xenakis' "Orchestral Works and Chamber Music" on Col Legno. Varese is a key influence, especially the composition "Arcana"!