Kalk Samen Kuri no Hana
After the release of Sheena's third album, "Kalk Samen Kuri no Hana" in 2003, Sheena embarked on a nationwide tour entitled "Sugoroku Ecstasy". Sheena asked the backing members well in advance to perform for the tour, so that her first choices would not be double-booked. These members were dubbed Tokyo Jihen, a name that was publicised during the tour. Tokyo Jihen was officially announced as Sheena's main musical unit on May 31, 2004, and first performed at a series of summer music festivals in July and August 2004.