Visualize Parts of Song as Analyzed by Echonest
This code is really nice, and the output is very good looking! I do have a few nitpicky things that I want to cover.


Why are you storing the usage in a variable named usage? This should be in the file's main docstring. You don't need to print usage under if __name__ == "__main__":.
Is # encoding: utf=8 really needed? It doesn't seem like you're using any special unicode characters anywhere, so remove it.
You should have a docstring in visualize_analysis. Describe what the function does, and how it does that, preferably, in detail.


That's about all I see that should be improved! If there's anything else you want me to cover, mention it in the comments, and I'll see what I can do! Hope this helps!