Boy group BTOB came back with an uplifting dance song.

On KBS 2TV music program "Music Bank" Choongbook Expo special aired on October 3, BTOB performed their new song "You're So Fly", officially making their comeback.

Their playful images caught much attention. They appeared in black and white outfits, making playful faces at the camera and enjoying their time on stage. Their retro sound and addictive charisma rapping caught much attention.