Rainbow is a South Korean all-girl idol group assembled by entertainment company
DSP Media in 2009. Consisting of Woori, Seungah, Jaekyung, Noeul, Yoonhye,
Jisook, and Hyunyoung, the seven-piece made its official recording with the
mini-album Gossip Girl (2009), which climbed to Number 2 on the Gaon charts. In
2010, Rainbow scored their first Top 10 single with “A,” included in their
second extended-play So Girls (2011), as well as in their Japanese studio debut,
Over the Rainbow (2012). The Japanese version of “A” entered the Top 10 of the
Oricon charts, peaking at Number 3. In ...