SISTAR(SoYou & HyoLyn) - Hurt(Christina Aguilera) [Yu Huiyeol's Sketchbook]
【TVPP】Hyorin, Soyou(SISTAR) - Dejavu, 효린, 소유(씨스타) - 데자뷰 @ Three Turns
[Special Clip] 효린(Hyolyn)X소유(SoYou) - '꽃이 핀다(GROWING)' Piano Cover
효린, 다솜 (HYOLYN, DASOM) - 둘 중에 골라 (Summer or Summer) MV
【TVPP】 Hyorin(SISTAR) - SOFA, 효린(씨스타) - 소파 @Duet Song Festival
소유 (SOYOU) 'PDA' Official MV
Sistar Hyorin and Soyou ( SoRin moments )
Soyou and Hyorin funny moments
When Hyolyn and Soyou forget lyrics on stage XD
SoYou & HyoLyn (Sistar) - Hurt Lyrics
【TVPP】Hyorin(SISTAR) - Fate, 효린(씨스타) -인연 @ I Am a Singer 3
HYOLYN(효린) '달리 (Dally) (Feat. GRAY)' Official MV
HYOLYN (효린) 'YOU AND I' M/V
The Family, Sistar : Dasom is jealous of Soyou because of Hyorin (CC)
【TVPP】Hyorin(SISTAR) - Bang Bang (with Ailee, Jessie), 효린(씨스타) - Bang Bang @ 2014 KMF Live
[Soyu (SISTAR) & Junggigo (ft. Lil Boi of Geeks)] Some (썸) Hangul/Romanized/English Sub Lyrics
[HIT] 뮤직뱅크-소유X정기고X효린X주영 - 썸X지워(SOMEXErase).20141219
SISTAR(SoYou & HyoLyn) Hurt - Christina Aguliera - Vocal Coach Analysis and Reaction
What Happened to SISTAR - The Beautiful Reason They Disbanded
120523 HyoLyn & SoYou (SISTAR) @ Weekly Idol Preview Next Week
(Funny)hyorin and soyou laughing together about...
INCREDIBLE!!! Hyolyn And Soyou Coincidentally Make Similar Remarks On Different Broadcasts - WATCH
Jessi & Hyolyn (제시 & 효린) - Diamonds [Yu Huiyeol's Sketchbook / 2017.08.02]
[Fancam] 140402 Sistar First Mini Concert in Hong Kong --- Hyolyn & Soyou stage
![SISTAR(SoYou & HyoLyn) - Hurt(Christina Aguilera) [Yu Huiyeol's Sketchbook]](https://img.youtube.com/vi/_1pLhdWe2xo/0.jpg)
![[Special Clip] 효린(Hyolyn)X소유(SoYou) - '꽃이 핀다(GROWING)' Piano Cover](https://img.youtube.com/vi/YMStTO3Uttc/0.jpg)
![[Soyu (SISTAR) & Junggigo (ft. Lil Boi of Geeks)] Some (썸) Hangul/Romanized/English Sub Lyrics](https://img.youtube.com/vi/j2NghJuQrRo/0.jpg)
![[HIT] 뮤직뱅크-소유X정기고X효린X주영 - 썸X지워(SOMEXErase).20141219](https://img.youtube.com/vi/UQO4MIFuulQ/0.jpg)
![Jessi & Hyolyn (제시 & 효린) - Diamonds [Yu Huiyeol's Sketchbook / 2017.08.02]](https://img.youtube.com/vi/sQmJ6sVHecY/0.jpg)
![[Fancam] 140402 Sistar First Mini Concert in Hong Kong --- Hyolyn & Soyou stage](https://img.youtube.com/vi/utvcxJgA7Dc/0.jpg)