Melon Kinenbi (メロン記念日; Melon Anniversary) was a Japanese pop group under Hello! Project. During its tenure, Melon Kinenbi was the most stable of the groups in Hello! Project with a lineup that remained unchanged throughout their ten year run. Melon Kinenbi experimented with various musical styles over the years, ranging from bubblegum pop to rock. The band occasionally worked as dancers for other Hello! Project artists (See the music video for Goto Maki's single "Yaruki! IT'S EASY". On February 2010, Melon Kinenbi announced that they decided to disband.