FTISLAND Lee Jae Jin showcased a song that he wrote himself on KBS' "Music Bank."

On September 14, Lee Jae Jin sang "Paper Plane," a song he had written and composed a year ago. 

After the performance, he said, "It's the first song that I've revealed in Korea but I think there may be more opportunities for me to do so. I was really nervous but it was really fun. I'm very happy."

They also released the above photo, where he is shown practicing even until the moment that he went up on stage. He's looking at the camera with a cute smile.

FTISLAND finally came back with their title song, "I Wish" and "Paper Plane." Lee Hongki's singing abilities really brought out the songs and his obvious showmanship also shined. 

Their title song, "I Wish" begins with a unique Spanish guitar melody and includes a twist from staring with minor sound and changes into a major key.

"Paper Plane" is a very soft rock song that brings out the softness of his voice and the message is that you can get strength for your dreams and hopes.