I was given this some years ago when ill in hospital and have used it successfully whenever I have insomnia (which is often). Although I found it relaxing, it took a couple of weeks of using it twice a day before I was actually dropping off halfway through. The two tracks are quite similar and I enjoy both, but listened to together they're quite long so I tend to stick to track 2 only, as I find 25mins is about right (if you're trying it for the first time, I'd recommend you listen to the whole thing, til you decide what works for you). Even if I don't fall asleep during the track, I can usually turn over and doze off straight afterwards. I've had insomnia for years and tried lots of different music & talking cds (including Glenn Harrold, Paul McKenna) but this is the best. I use it with pillow speakers so as not to disturb my husband. It has helped dispel the anxiety associated with chronic insomnia and is the best aid to relaxation & sleep that I've come across.
Anyone who complains about the quality of the music is missing the point. Its aim is to create a hypnotic, sleep-inducing effect so yes there is a dreaminess to it but it is not annoyingly repetitive, on the contrary it's very pleasant. Midori is a talented musician and composer. The booklet supplied with the cd has some useful tips too - even if you've had sleep problems for a long time & have heard it all before, it's sometimes good to be reminded of the basic principles.