Japanese band Babymetal has embarked on five headlining tours, in addition to performing at various other one-off shows, award ceremonies, and television shows. Babymetal originated as a sub-unit of the Japanese idol group Sakura Gakuin in 2010, and first promoted their first singles as part of the group at their various concerts in Japan. For the first three years, the band performed as a sub-unit of the main group called jūon-bu (heavy music club).