Red Velvet - Happiness | 레드 벨벳 - 행복 [Music Bank Debut / ]

[Music Bank : Hot Debut!] Red Velvet - Happiness | 레드 벨벳 - 행복 ----------------------------------------­--------- Subscribe and watch more K-pop live! KBS World Official YouTube: ----------------------------------------­--------- KBS World is a TV channel for international audiences provided by KBS, the flagship public service broadcaster in Korea. Enjoy Korea’s latest and most popular K-Drama, K-Pop, K-Entertainment & K-Documentary with multilingual subtitles, by subscribi