Kim Hyun-joong is a South Korean actor, singer and songwriter. He is a member of the boy band SS501 and played roles in the Korean dramas Boys Over Flowers and Playful Kiss.

Break Down is the debut Korean solo mini album of Kim Hyun-joong of South Korean boy band SS501. It was released on 7 June 2011 under KeyEast Entertainment. A Limited Edition was released on 23 June 2011, with a bonus DVD with music videos and behind-the-scene footages. The album was released in Taiwan by Warner Music Taiwan in two versions: Regular and Commemorate Editions.