Music sudgestion
Look in NG audio for the author cornandbeans and use his song
eiffel 65 blue remix
or something like that. It's allot better :). This had a nice idea but the animation needed more improving. You said you immagined them "dancing"? Cause when they played music or singing, they didn't move or hardly moved. My other sudgestion is that you can make sonic dance with other sonic people with different effects to draw more attention to the video itself. I hope this helps ;P
~ DEFF