For an introduction to the water cycle or just to celebrate Earth Day, this is a book/CD combo that both pleases and informs. The author is not only an award-winning environmental educator and river guide, but also member of the well-known Banana Slug String Band. From the trickle of snowmelt to the roar of the ocean, River Song celebrates rivers as a fascinating, ever-changing source of life and joy. It also introduces the young reader to vocabulary such as eddy, riffle and meander, and tells about some of the plants, animals, and insects that depend on the river. The attached CD presents the vibrant rendition from the band.