Sung Si Kyung and Gilme participate in singing an OST for the KBS drama, "Ohlala Couple."

On October 16, the OST sung by Sung Si Kyung will be released on various music sites. Sung Si Kyung also helped in producing this song as well.

The song, "Where I Live," features a drum beat and a guitar sound, creating a rock feel.

The "Ohlala Family" production team commented, "This song is totally different from any song Sung Si Kyung has ever sung. Many people will be shocked to see a different image of him through this song."

Gilme will also be singing a song titled, "Missing Person," which features her powerful vocals. 

"Ohlala Couple" is about a couple whose bodies are switched after filing for a divorce.