DOROTHY LITTLE HAPPY is a five-member Japanese idol group under avex trax. DLH was formed in 2010 as an indie idol group. In 2011 they signed with avex. Dorothy Little Happy was formed in 2010 with members of the unit B♭ from Sendai. Producer Sakamoto Satoru got the inspired behind the band's name from the novel Wizard of Oz. The group consists of five vocalists with KANA as the lead vocals and backup dancers.