Have been really pleased with this CD. My 3 month old baby girl has always had trouble with daytime naps and would only sleep for a maximum of 45 minutes when the house was quiet. However, we noticed white noise, e.g. a desktop fan helped her nap for longer (think it maybe blocks out distractions and soothes). Unfortunately a fan isn't very portable, whereas a CD is! This CD works really well and she is currently asleep in her cot with it playing as I type this! I liked this CD as opposed to many other CD's on the market because it sounds like rain which somehow seems more appropriate than a CD of hoover noise! She seems to like it anyway! Great price too as many other CD's worked out more expensive.