Lost Harmony (2011)

Seven female students and one teacher go to a retreat in order to practice their vocals for a competition. They stay at a lodge where a murder had occurred fourteen years ago. A corpse of a schoolgirl was found decapitated and dismembered. A mobile telephone game is popular with the students. It shows a part of the human body. As the students play the game strange things occur. The students are apparently doing more than merely playing a game.