| 곡명 | 아티스트 | 앨범 | 듣기 | 뮤비 | 가사 | 악보 |
|---|---|---|---|---|---|---|
 좋은날 [FEAT.HEX] |
원써겐 (1SAGAIN) | 1SAGAIN-좋은날(DIGITAL SINGLE) |  |
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| 이별후에 [FEAT.주보라] |
원써겐 (1SAGAIN) | 1SAGAIN 1집 ONCE AGAIN | |
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| FALL IN LOVE [FEAT.주보라] |
원써겐 (1SAGAIN) | 1SAGAIN 1집 ONCE AGAIN | |
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| MY LOVE [FEAT.주보라] |
원써겐 (1SAGAIN) | 1SAGAIN 1집 ONCE AGAIN | |
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| 사랑은떠났어 [FEAT.주보라] |
원써겐 (1SAGAIN) | 1SAGAIN 1집 ONCE AGAIN | |
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| LAST CHRISTMAS [FEAT.주보라] |
원써겐 (1SAGAIN) | LAST CHIRSTMAS | |
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| LOVE ME LOVE ME [FEAT.김현민] |
원써겐 (1SAGAIN) | REWIND | |
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| 내사랑의봄날 |
원써겐 (1SAGAIN) | 원써겐(1SaGain) 1집(Once Again ) | |
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| 왠지좋은날 [FEAT.HEX OF 바닐라시티] |
원써겐 (1SAGAIN) | 원써겐(1SaGain)DigitalSingle(좋은날) | |
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| 여름이좋은날 [FEAT.김현중 OF M.A.C] |
원써겐 (1SAGAIN) | 좋은날 | |
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| 만나서반가워요 [FEAT.타린 OF 바닐라어쿠스틱] |
원써겐 (1SAGAIN) | RECALL | |
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| 사랑후에 |
원써겐 (1SAGAIN) | 사랑후에(DIGITAL SINGLE) | |
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| 마이크 [FEAT.STI] |
원써겐 (1SAGAIN) | 원써겐(1SaGain)1집(OnceAgain) | |
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| 기억을지워주는병원 (FEAT.현중 OF M.A.C) |
원써겐 (1SAGAIN) | 원써겐&팻두SingleAlbum(Hello,Doctor) | |
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| 이젠지쳤어 |
원써겐 (1SAGAIN) | 이젠지쳤어.. | |
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| ONE DAY [FEAT.주보라] |
원써겐 (1SAGAIN) | 원써겐(1SaGain) 2집(alone) | |
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| 커피한잔하실래요 [FEAT.히나인] |
원써겐 (1SAGAIN) | 원써겐(1SaGain)2집(alone) | |
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| MY LIFE IS우울해 [FEAT.도니제이] |
원써겐 (1SAGAIN) | |
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| 너에게만들려주고싶은고백 [FEAT.구인회,조아라] |
원써겐 (1SAGAIN) | 원써겐(1SaGain)DigitalSingle(너에게만들려주고싶은고백) | |
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| 전화기만바라보며 [FEAT.주보라] |
원써겐 (1SAGAIN) | 원써겐(1SaGain) Digital Single(Rewind Vol.2) | |
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| 건강하세요 [FEAT.주보라] |
원써겐 (1SAGAIN) | 원써겐(1SaGain)DigitalSingle(건강하세요) | |
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| 바람둥이의첫고백 [FEAT.혜] |
원써겐 (1SAGAIN) | 바람둥이의첫고백,FROM YOU,TO YOU | |
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| DON'T GO WAY [FEAT.주보라/MOLLY.D] |
원써겐 (1SAGAIN) | |
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| 크리스마스엔생겼으면좋겠다 [FEAT.샛별] |
원써겐 (1SAGAIN) | 원써겐&팻두DigitalSingle(크리스마스엔생겼으면좋겠다) | |
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| LOVE IS OVER [FEAT. 일리] |
원써겐 (1SAGAIN) | 원써겐(1SaGain) Digital Single(Love Is Over) | |
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| STAY |
원써겐 (1SAGAIN) | 원써겐(1sagain) & 레이디 제인(Lady jane) Digital Single(New Story Part 5) | |
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| 비가내리고 (RAIN) [FEAT.박수민] |
원써겐 (1SAGAIN) | FROM YOU TO YOU | |
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| 잊혀지다 [FEAT.주보라] |
원써겐 (1SAGAIN) | REWIND | |
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| 비처럼음악처럼 |
원써겐 (1SAGAIN) | |
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| 흔한이야기 (ORDINARY STORY) [FEAT.현중 OF M.A.C] |
원써겐 (1SAGAIN) | FROM YOU TO YOU,흔한이야기 | |
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| 가지마 [FEAT.주보라] |
원써겐 (1SAGAIN) | 원써겐(1SaGain)DigitalSingle(가지마) | |
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| 너와나의레시피 (FALLIN') [FEAT.STI, 제나] |
원써겐 (1SAGAIN) | FROM YOU TO YOU | |
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| MISS FANTASTIC [FEAT.주보라,CARRY DIAMOND] |
원써겐 (1SAGAIN) | 원써겐(1SaGain)1집(OnceAgain) | |
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| GO HOME [FEAT. 박수민] |
원써겐 (1SAGAIN) | REDESIGN | |
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| 타버린사진 (LET GO) [FEAT.미소] |
원써겐 (1SAGAIN) | RECALL | |
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| 보통의말 |
원써겐 (1SAGAIN) | 보통의말 | |
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| 그래도사랑해 |
원써겐 (1SAGAIN) | 그래도사랑해 | |
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| 밤새도록하고싶은말 [FEAT.앤씨아] |
원써겐 (1SAGAIN) | 밤새도록하고싶은말들 | |
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| 너는듣지않았으면해 [FEAT. PAUL KIM] |
원써겐 (1SAGAIN) | |
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| 하루종일 [FEAT.아가싱즈] |
원써겐 (1SAGAIN) | |
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| 충분하지않아 [FEAT.이바다] |
원써겐 (1SAGAIN) | |
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| 우리의시간은같았었는데 [FEAT. 김꽃] |
원써겐 (1SAGAIN) | |
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| 기억끝에서 |
원써겐 (1SAGAIN) | |
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| 사랑이짧다고그슬픔도짧을까 |
원써겐 (1SAGAIN) | |
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| WOULD YOU [FEAT. 폴킴] |
원써겐 (1SAGAIN) | 정규 4집 ME | |
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| BE MY DAY [FEAT. 김호연] |
원써겐 (1SAGAIN) | |
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| 아내에게 |
원써겐 (1SAGAIN) | |
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| 우린친구였을까 [FEAT. 나율] |
원써겐 (1SAGAIN) | |
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| 음악을관둘때가된듯해 [FEAT. 유영] |
원써겐 (1SAGAIN) | |
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| 아홉 [Feat. 눈 (Nuun)] |
원써겐 (1SAGAIN) | " | |
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| Is It You [Feat.눈 (Nuun)] |
원써겐 (1SAGAIN) | " | |
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| Say Goodbye |
원써겐 (1SAGAIN) | " | |
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 10월27일 [Feat. Limji] |
원써겐 (1SAGAIN) | 정규4집 'Me' | |
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 이노래를듣게되면 |
원써겐 (1SAGAIN) | 이노래를듣게되면 | |
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