Understandable, the game has a bit of a learning curve in regards to keeping in time. One of the ways to pace yourself to the music is to use the dash, its basically a free action, failing it doesn't affect your reel. So it becomes a matter of dashing hearing the sound effect to confirm you are on beat, then as you keep the rhythm you switch to attacks, rewind and so on. I had some issues at first too, but after playing it after taking a break and thinking about it, I managed to beat it!
Thanks for playing our game!