Hello BTS Army! Are you crazy fans of kpop music? Are you love boy band bts from korea? This app made for you: "Wallpapers BTS KPOP - Ultra HD Wallpaper Lockscreen". BTS, also known as the Bangtan Boys, is a seven-member South Korean boy band formed by Big Hit Entertainment. They debuted on June 12, 2013 with the song "No More Dream" from their first album 2 Cool 4 Skool.