Duet song festival YS

BREATHE (audio) - Heo Youngsaeng [DoubleS301] and Lee Jeonghyuk

Perfect man (audio) - Heo youngsaeng [DoubleS301] and Lee Jeonghyuk

Atlantis Princess (audio) - Heo Youngsaeng [DoubleS301] and Lee Jeonghyuk

To Her Lover (audio) - Heo Young Saeng [DoubleS301]

Double S 301 (SS301) - 2nd Mini Album in Japan [ S (エス) ] Full Album audio

I Can not forget

[Duet Song festival] Heo Young Saeng(SS501) and JeongHyuk - Presentaciones "AUDIO"

Immortal Songs - SS301, Overwhelmingly moving performance 'I'm Fine'.20161210

[ซับไทย&คาราโอเกะ] 버티고 있지만 (I'm stangding but) - Heo Young Saeng One Step OST.