Nine Orchestral tracks best suited for story driven horror games. While horror is an easy fit, these tracks will find a home in any serious, dramatic, environment.
Compared to it's free counterpart, these tracks were composed and rendered with much higher quality instruments.
Some benefits of using the Deluxe version over free:
1) Better Support - if you need alternate mixes of a track, an instrument added (or taken out), to even getting the midi data, you'll find all that and more here.
2) As mentioned the instruments are much higher quality than the Basic version. The strings sound much fuller and like what you'd expect from something labeling itself in the Orchestral section.
3) On providing proof of purchase you can even request an entirely new track that fit this genre - and you can even request that it not get added to the pack. So your game can stand out a bit from the crowd.