Morning Musume (モーニング娘。, Mōningu Musume.), sometimes referred to as Momusu (モー娘。, Mōmusu.), is a Japanese girl group formed in 1997 by rock singer-songwriter turned record producer Tsunku, who later composed a vast majority of the group's songs over the decade. They are the lead group of Hello! Project that specialises in upbeat, pop-oriented music coupled with dance performance.