Seo Joo-hyun, who uses the stage name Seohyun, is a South Korean singer, dancer, actress, TV presenter and promotional model. She is the youngest member of the South Korean girl group Girls' Generation.
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Buy Discography: 
| Play | Soundtrack | Movie/Serie | Type | Buy song | |
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| I'll Be Waiting | Paesyeon-wang | performer, writer |
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| Only U | The TaeTiSeo | writer |
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| Twinkle | The 3rd Hospital | performer |
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| Cheap Creeper | Make Your Move | performer |
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| Day By Day | Betoben baireoseu | performer |
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| I Want to Dream with You Forever | Pasta | performer |
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| I'll Be Waiting | Fashion King | writer, performer |
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| It's Okay Even If It Hurts | Kim Soo Ro | performer |
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| Journey | Paradise Ranch | performer |
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| Motion | Maen-tang-e He-ding | performer |
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| Only U | Taeng9cam | writer |
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| The Little Boat | Hong gil dong | performer |
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