I would probably gave you more stars if it had an "ending" of some kind. Now it's an interesting, emotional idea, singing while waiting for the train, but the singing eventually stops and there's nothing much to do – and nothing at all happens.
I am not eager to actually see the result of a collision with a train, but you could – for example make the song gradually louder and the train gradually quieter, then make the screen fade to black, insert a few seconds of complete silence interrupted by a train horn… maybe. It's your game, anything is good but in its current state it seems a little bit unfinished.