: The album features five members—Jiyoung, Nicole, Gyuri, Seungyeon, and Hara—and represents a significant era of K-pop's expansion into the Japanese market.

: Interestingly, the series discusses how the 1992 ERM crisis in Britain supposedly created a cultural need for "cheering up," leading to the rise of the girl band phenomenon. Reviewers have also noted that the archival "MP4" style clips in the show often contain odd metadata descriptors at the bottom of the screen. Animation: Harvey Girls Forever!

A more recent association comes from the 2025 BBC series .