The single achieved later success after a fancam of Hani performing the song went viral in November 2014. The song is included on their second mini-album Ah Yeah.
A Chinese version of the song was released on January 10, 2017 as their second Chinese single, along with a music video.
A Japanese version of the song will be released on August 22, 2018 in Japan as part of their debut single in the country.
- "Up & Down (위아래)" - 3:09
- "Up & Down (위아래)" (Inst.) - 3:09
- Music video
- Dance practice
- Guerilla performances compilation
- Run to You live performance