Apparently there was a worldwide competition where the winner gets to be visit Hollywood and tape an episode of Glee. And the winner is Hazel Faith Dela Cruz who's from the Philippines as announced by some of the casts, Harry, Cory, Kevin and Matthew.
They apparently sent audition tapes and luckily enough, she was chosen! As described, the winner gets to have a scene on an episode of Glee in season 2. Which obviously means she'll have a singing part since they've sent audition tapes. Lucky girl!
The sad thing is, Ryan Murphy is slowly entering more and more characters, to make everything ready for the "graduation" of the old characters... :(