"Lose Your Mind" is BoA's 24th Japanese single. Alongside the title track is one B-side, "Smile Again". Lose Your Mind was released on December 12, 2007.
The music video features BoA as a supermodel on the catwalk. She and two other female backup dancers start dancing on the catwalk and are joined by three male dancers. The music video also shows BoA in a short black wig. Yutaka Furukawa from Doping Panda also makes an appearance in the music video, playing the electric guitar. BoA's three outfits in the music video are a huge contrast to each other. She and her backup dancers are featured wearing black clothes. Later in the music video they are all wearing more casual clothes.
