As a music and math enthusiast, I gotta say, this song-track for a passionately inspired character is pretty amazing. The character itself is a solid subject that fits within the game logic and behaves well according to game balance and character controls.
Secondarily, the character has a unique artistic style that is fresh and makes the character an individual. The character's back-drop and art is both appealing and interesting.
Third and finally, the musical composition put this character on a much higher level. I'm sure we've all heard "Music can make the ..." game/movie/TV show/Commercial. This character definitely has that, and has all of the above as well.
I want to congratulate the team, graphic and character design, game balance design, and the musical collaboration for putting out a piece of gold. This release, Vi, really seems to have it all down pat.
Well done, and bravo, if you can!
Excellent work to everyone involved.