2000-2005: Initial beginnings Beginning in 2000,
Tsunku created a music collaboration project with members of
Hello! Project rearranged into three separate teams. The first theme, "color", consisted of , , and . All groups released their singles on March 8, 2000, with Akagumi 4's single "Akai Nikkichō" charting the highest at #2 on the
Oricon Weekly Singles Charts.
2009: Champloo On July 15, 2009, Tsunku revived the Shuffle Unit project with a
cover album titled
Champloo: Happy Marriage Song Cover Shū, describing it as
J-pop with the intention of it being played during summer parties and weddings. He named the concept of the Shuffle Units "
champloo" to describe the "chaotic" member line-up. ==Members==