SBS weekend special "Five Fingers" star Ji Chang Wook will sing for the OST.

The "Five Fingers" OST comprises of songs from Lim Jung Hee, Homme, GLAM, Lim Jae Wook and many other musicians. Now, the most recent version released on Saturday includes a song 'Fill Up' by Ji Chang Wook, who plays Yoo In Ha in the drama.

'Fill Up' is a ballad song that appeals to the love of the character and talks about Yoo In Ha's feelings towards Hong Da Mi. It's written by songwriter Lim Dong Kyoon, who has done songs for other OSTs including "Dr. Jin" and "Unexpected You."

Ji Chang Wook has already been affirmed as a singer from his work in "Warrior Baek Dong Soo" and musical "Thrill Me."

The final album was released on Saturday, as the series comes to an end, with the characters finding their loves and dreams respectively. People have high expectations for the album, comprised of works from great musicians.