... you never can imagine that the family-relationship between their creators wasn't always as "happy" as the music sounds. Fascinating documentary about a pair of songwriters who knew how to create memorable melodies. The bonus features are a fine addition.
...but the running time of the CD is rather short. Of course the projection show is not longer than this, but why not put a second version of the soundtrack on the CD without all the sound effects and dialogue parts mixed on top, so you could simply hear the music?
If you ever wanted to know what efforts make Disney Parks look like they do, this book is highly recommended. It features color schemes, unused designs and many other behind-the-scenes photos and graphics showing John Hench's extensive work for the parks.