The 5.6.7.8’s formed when Sachiko and Yoshiko “Ronnie” Fujiyama, two sisters from Tokyo who both shared a passion for rock and roll, founded the band in 1986 with two other members. Originally, the line-up consisted of Yoshiko on vocals and guitar, Rico on second guitar, Yoshie on bass guitar and Sachiko on drums. After several line-up changes (including the bassist Yoshiko “Yama” Yamaguchi, who was the bassist featured in the Kill Bill movie), the band eventually became a threesome after Rico and Yoshie’s departures. Yoshiko and Sachiko are still the main components in the band, and now Akiko Omo has rejoined the band as the bass guitarist (She originally joined the 5.6.7.8’s in the early 1990s).
Even though the group mostly sing their songs in Japanese, they do many covers of American rock and roll records from the 1950s to the 1980s. However, their official website and most of their fansites and fanclubs are in Japanese, as they have their biggest following in their home country.
Yoshiko, who plays a Teisco guitar and sports a “Teenage Queen Delinquent” tattoo on her upper right arm, was initially the lead vocalist, but as the band performed more rock and roll songs originally performed by female groups, every member had equal parts in vocals and many songs are performed singing simultaneously.