Yeah. I had to change the focus of the game because my first idea was too much time consuming. I know it's a bit of a stretch to fit the 'scale' theme just in growing waves and shrinking enemies.
For the sync part, I tried to adjust it better, but the time was running out and I guess I ended doing a bit of a sloppy job. I'll definitely try to adjust it better and add some visual cue to signal the beats beforehand.
Thanks for your feedback!