| Jichin Haru(Yeonghwa 'Seungbu' X Hadonggyun)Ha Dong-kyun | | 2025 |
| GidarilgeHa Dong-kyun | | 2021 |
| Geunyang Nareul Beoryeoyo(BubuuisegyeOST)Ha Dong-kyun | | 2020 |
| BEAUTIFUL THINGSHa Dong-kyun | | 2017 |
| RunHa Dong-kyun | | 2014 |
| From MarkHa Dong-kyun | | 2012 |
| After The Love(BanjjakbanjjakbitnaneunOST)Ha Dong-kyun | | 2012 |
| Always(GumihooejeonOST)Ha Dong-kyun | | 2002 |
| Geunyeoreul SaranghaejwoyoHa Dong-kyun | | 2002 |
| Naega GeudaelHa Dong-kyun | | 2002 |
| NabiyaHa Dong-kyun | | 2002 |
| Naesarang NaegyeoteHa Dong-kyun | | 2002 |
| HangyeHa Dong-kyun | | 2002 |
| Geudae Nae PumeHa Dong-kyun | | 2002 |
| MaedeupHa Dong-kyun | | 2002 |
| Taljin(Oneulbam,segyeeseoisarangisarajindahaedo X Hadonggyun)Ha Dong-kyun | | 2002 |
| Biga Ona Nuni OnaHa Dong-kyun | | 2002 |
| NunmulsoriHa Dong-kyun | | 2002 |
| I Bam Naui MaeumHa Dong-kyun | | 2002 |
| Geuttae UrinHa Dong-kyun | | 2002 |
| I Wish(MujeoguinakhasanyowonOST)Ha Dong-kyun | | 2002 |
| Jigeum Geurigo UrinHa Dong-kyun | | 2002 |
| HwansaengHa Dong-kyun | | 2002 |
| Sesang… Dan Hanbeonui Sarang(SarangemichidaOST)Ha Dong-kyun | | 2002 |
| Geunyeoreul Saranghaejwoyo Part 2Ha Dong-kyun | | 2002 |
| NeokduriHa Dong-kyun | | 2002 |
| Cheoeum Geudaereul SaranghaesseotdeonHa Dong-kyun | | 2002 |
| Mianhapnida(GangjeokdeulOST)Ha Dong-kyun | | 2002 |
| Neoreul Chaja GeotneHa Dong-kyun | | 2002 |
| Naneun Neoege(WontideuOST)Ha Dong-kyun | | 2002 |
| Gaseum Hanjjok(ButakhaeyokaeptinOST)Ha Dong-kyun | | 2002 |
| Joaboyeo(GutdakteoOST)Ha Dong-kyun | | 2002 |
| Haengbokhan SaramHa Dong-kyun | | 2002 |
| Home(RaipeuOST)Ha Dong-kyun | | 2002 |
| Geureon YeojanikkaHa Dong-kyun | | 2002 |
| Gati Gaja(MadeoOST)Ha Dong-kyun | | 2002 |
| Geudaen Amureotji AngeHa Dong-kyun | | 2002 |
| MeollimeolliHa Dong-kyun | | 2002 |
| SarangegeHa Dong-kyun | | 2002 |
| UnmyeongHa Dong-kyun | | 2002 |
| Ibyeorui NoraeHa Dong-kyun | | 2002 |
| Golmokgil Reobeu SeutoriHa Dong-kyun | | 2002 |
| NareulHa Dong-kyun | | 2002 |
| Geurae SarangieotdaHa Dong-kyun | | 2002 |
| Beautiful DayHa Dong-kyun | | 2002 |
| Malhaneun DaeroHa Dong-kyun | | 2002 |
| Mot IjeoHa Dong-kyun | | 2002 |
| Taljin(Yeonghwa"Oneul Bam, Segyeeseo I Sarangi..Ha Dong-kyun | | 2002 |
| BeautifulHa Dong-kyun | | 2002 |
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