Why this doesnt work

The reason why the original fantasia was so great is because the animators did their best to match the music and the animation. I am not going to say that the original fantasia was perfect(it was not in my opinion)but Disney knew that this is a tribute to classical music were music leads not animation. Here with the exception of rhapsody in blue segment nothing fits the animation.Its obvious that classical music takes a back seat in fantasia 2000