Thank you so much for all the hassle of not only providing feedback here but also filling the forms! We've considered having the disc wobble in sync with the music. However as different soundtracks get used in the game, each with a different bpm, this would mean that each stage would make the disc's up and down movement have a different timing, which could be a hassle for the player to keep up with every single time. Having said that, we already have some ideas on how to make it easier for people to get the hang of the wobble mechanic. All in all, I'm glad you liked it overall, and once again thank you for all your feedback, you can be sure we'll use it to improve the game :)