Good job with the song, I liked it. I get what you were going for with the size thing, but I found that if I made myself biggest and tapped right click in the air with the space bar, it pretty much acted as a more difficult triple jump. best I could do was three tapes in a run. I could definitely see how it would be cool with more time for polish.
I did get annoyed by how long the rewind took on death, especially since my first death i actually made it pretty far