Hi guys!
I watched a korean movie a few years ago and I can't remember the name. It's a comedy. It was about a man, he was a bachelor. One day this girl shows up at his door with a little boy and a guitar. It turns out she's his daughter. And somewhere near the end of the film the daughter enters this singing competition.
I hope this was specific enough. I wish I could give the name of an actor.
Thanks for the help!