Melon Kinenbi (メロン記念日, sometimes romanized as Melon Kinen-Bi) were an all-girl Japanese pop group within Hello! Project. They were formed after they successfully passed the 2nd . Melon Kinenbi is the oldest group in the history of Hello! Project not to have changed any of its members since its formation. The band occasionally worked as dancers for other Hello! Project artists; they can, for instance, be seen in the music video for Maki Goto's single "Yaruki! It's Easy".