This is one superbly entertaining music video.
I hope you collect all the assets for these productions and store them in a safe place.
As you obtain a mastery of lighting I have a feeling you'll want to revisit this one.
As others have suggested getting the spotlight on the important element of the scene will accentuate the storytelling and take it to the next level. It'd pop the main characters out and blend the backgrounds in. The imagery is showing dark and important details are blending in with the background on my screen. (I completely missed the logo)*
As much as I like the cartoon conductor I'd really love to see a version of this with live action elements of Myron doing the intricate finger work.
This live action element would contrast nicely with the animated animals and really bring all the characters' personalities out.
Of course this is all very easy to say while watching from the sidelines.
I'm very jealous of your talents!
*Side Note: In the book 'Timing for Animation' John Halas/Harold Whitaker suggest using approx 16 frames for each word in a title card to account for viewer 'reading time'. Similarly, if an object is there for less frame time, which includes being viewed in proper lighting, it may be missed and not read in time. Unlike mediums like comic books, with film you may only get that one time.
Reading time must be planned into each scene. It must be intentionally designed. When there aren't enough frames available to allow for proper reading of the important details and story element the use of Anticipation can be used to attract the viewer's attention to where it needs to be at the proper time.
Of course Easter Egg details (those that people love to find on repeated and more thorough viewings of a film) can have a lesser emphasis applied.