Instant Zen CDs use clinically proven brain wave technology. Specific sound frequencies have been found to influence brain wave states. Instant Zen masks these frequencies with a soothing Ganzfeld Sound Field which blocks out distracting noises as well as providing a blank slate for the mind. The Ganzfeld Field sounds natural like wind or a waterfall. Instant Zen Trance State uses frequency patterns designed to induce Theta trance brain waves. Tracks are included for shorter and longer sessions. This CD can be used to bring the mind into a deeply relaxed state bordering on sleep. This brain wave state is associated with deep relaxation ESP and dreaming. Instant Zen Trance State is ideal for meditation wake induced lucid dreaming and taking that One Step Beyond. Comes with a stylish durable Ying-Yang CD case that stacks with the other Instant Zen cases and instructions.Features Induce Theta trance Brain WavesClinically Proven Brain Wave TechnologyNatural Effect No Subliminals