iCSound gives you an opportunity to create you own music in a very creative way. You can actually "see" the sound from various musical instruments and pre-composed loops mixed together.
Most of the DJ tools allow you to mix only couple tracks, but with iCSound you can mix up to 40 music loops with unlimited amount of audio effects.
iCSound is very flexible and expandable, all the effects have their own unique parameters, which can be separately setup to be applied on either one sound loop or even whole composition.