7nin Matsuri (７人祭; "7 Person Festival") was one of three special "shuffle units" from Hello! Project in the summer of 2001. The shuffle theme was "summer festivals" and they had a reggae dance song. They released only one single, "Summer Reggae! Rainbow" (サマーれげぇ！レインボー) which included their version of a c/w song that was shared by all three shuffles. True to their name, they had seven members selected from Morning Musume (Mari Yaguchi and Maki Goto), Coconuts Musume (Ayaka and Lehua), Country Musume (Asami), Melon Kinenbi (Ayumi Shibata), and included soloist Michiyo Heike. The other two shuffle units that year were 三人祭 and 10人祭. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.