This is a real game: not a troll. I promise you it is possible. The controls are fine. The music button DOES work, it's just that the song has a few seconds of silence. Be patient. When you press the green flag again you will be unable to move. I won't bother fixing it because you can just press the flag again and it works just fine.
I used a tutorial to make it scroll: but apart from that it was all me. Song: Martin Garrix - Proxy (Original Mix) This is old.