The Hong Kong Knife
- A-yo
- As every day goes by
- Ballad for an angel
- Bing bing bing
- Buh leut chuh luhm
- Burning life
- But…
- Cha lah lee
- Cheonbeone kiss v2
- Cheonbeonui kiss
- Cherished memories
- Chunsah leul wee hahn ballad
- Do whatever you want
- Do you know me?
- Eo neu gae in nal
- Geu deh ppoon ee joh
- Giog
- Haruga jinago
- Himul neyo
- Himul neyo (remix)
- How deep is your love
- I know
- I love you… (one-sided love)
- If it wer mine
- Instead
- Its only you
- Jaoonyeong
- Kasheereul samk'eeda
- Kiss friends
- Leaving you
- Like a habit
- Love always comes back
- Memory
- Mr. flower
- Nareul ddeonal tangsheenege
- Neh guh shee lah myun
- Neh muht deh loh hae lah
- Neoreul peeoonda
- Nol saranghandago…
- Non morununde…
- Noonmooree nayo
- Noui uimi (jang suwon & oh jonghyuk duet)
- Nunmuri nayo
- Ooh boy (featuring. j)
- Partner
- Peo reut cheo reom [like a habit]
- Pi ah noh
- Pi ah noh [piano]
- Please love
- Sa lang eun hahng sahng dah shee oh joh
- Sa lang ha seh yoh
- Sa lang hahl ddeh buh lyuh yah hahl myut gah jee
- Sheeganee heulleodo
- Sigani heulleodo
- Stay strong
- Swallowing thorns
- Tae gwon v
- Things that must be thrown away when your in love
- To the person who left me
- Twegeungeel plus
- Uh dduk
- Weh
- Why
- Yo! this is about my life
- Yo this is click-b we are all is b
- You don't know
- Your reason (duet. soowon jang, jonghyuk oh)