Pictures and animations are excellent (except for the non-beating bumblebee wings), narrators voice is excellent, "plot" is quite satisfactory, and for a beginning reader, this is a good length. Having a movie *and* an interactive book works well.
I have a few quibbles about the music, though: The Rimsky-Korsakov "Flight of the Bumblebee" music (which accompanies the interactive book) is too soft, given the conditions under which it is likely to be played. Also, it starts over at the beginning of each page on which it plays at all, so youre unlikely to hear the whole thing, if a preschooler is in control. And if you stop to listen to the music, the screen will soon blank and the music will turn off. :-( Couldnt you wait until the music ends?
Of course, most preschoolers probably wont wait long enough for the blanking screen to be a problem. ;-)
The Tchaikovsky "Dance of the Sugar-Plum Fairies" is fine. (Good volume, and since there is no interaction, the music is well matched to the action, and plays to the end.)