Fans are excited over the upcoming film, "Jungle Fish 2" (starring T-ara's Jiyeon and MBLAQ's Joon and Hong Jong Hyun), and many artists are already teasing the audience with their songs for the film's OST. The latest to join in on the fun is Kim Yeo Hee a.k.a Apple Girl! This overnight YouTube sensation is definitely hitting the big time as she's gone from viral videos to original soundtracks. While other artists have released full songs, Kim Yeo Hee only teased with a minute long snippet. Via her official YouTube channel, a video teaser was uploaded, and boy is it intense!  Titled, "Sad Feeling", the song has a beautifully sad melody, and the video briefly teases us with the film's intense dramatic plot.  Not to mention there's a surprise cameo from a certain smartphone at the end. Check it out below! http://www.youtube.com/watch?v=LDuOtcyVoyM "Jungle Fish 2" is set to release later this week on September 25th. Thanks to hye for the tip!