The concept is good, but the execution is poor.
I have to admit, this game sure is luck based, not only is it random chance if I get knocked off course by a bad song who's pattern I cant make out, bu it's also random if I clip through the floor and die for no reason.
There was a game for one of the GMTK jams that had a similar concept, but was aided by an indicator of when the song would hit it's beat. I would recommend that you check that out if you want to make a postjam game of this. That, and some major bug fixes.