I would like to see it. I can't sit through many love stories, but I will take your word for it that this film rises well above the level, which would make me cringe. I hope it comes round.
I have often thought that a really great film could be made about busking, but it is most unlikely that there would be much interest in making it. It is even more unlikely that anyone would be bothered to find out enough about it to make it believable. That is sad, because there have been some wonderful performers out there...