Actor So Ji Sub has left his fans wanting more with the pre-release of  "Field Trip" off of new album '6 PM… Ground'!

As mentioned previously, "Field Trip" features the lovely voice of Younha and a rap narration by So Ji Sub who express the feelings of a breakup. So Ji Sub's agency revealed, "So Ji Sub has a unique voice tone. It gives the listeners feel like your having a conversation right next to So Ji Sub. ['Field Trip'] combines singing and rapping, and expresses emotions like a romantic drama."

It has been revealed that So Ji Sub wrote the lyrics to three of the four songs on the upcoming album including "Field Trip" and has fans further anticipating his comeback to the music scene.

Check out "Field Trip" below!