These CDs are an amazing idea. The company has taken many popular artists/bands, from this time period and from earlier, and made some of their songs into a lullaby version. They are quite beautiful, and this would be perfect for parents who want music to listen to that doesn't drive them crazy!
I just like listening to these CDs, and I plan to have them for my future children.
Highly recommend as a Beatles fan - check out their website to see the entire collection.