There was a bit of a bug in the game after exporting it to WebGL where the beats/bubbles weren't spawning in the right place, thus not timed correctly to the song. We've since fixed most of the issues in the game, so I hope you'll try it after the game jam ends and we can upload the patch.
We initially did have the mechanic for each beat of the song to have its own key to press, you can see the remnants of this in each beat/bubble that indicates to press "space". However, we decided it would be too difficult for the player. But it's definitely something I'll bring back in the patch.
