TWICE debuted in October 2015 as JYP Entertainment's answer to a crowded girl-group era, emerging nine members strong from the reality survival show 'Sixteen' — a lineup spanning South Korea, Japan (Momo, Sana, Mina), and Taiwan (Tzuyu), assembled for maximum regional reach. Where JYP's earlier acts leaned moody or bombastic, TWICE went the other way: critics coined the term 'color pop' for their bright blend of hip hop, R&B, and hook-stacked bubblegum. 'Like Ooh-Ahh,' 'Cheer Up,' and 'TT' turned that formula into a run of generation-defining hits, and the group became one of the best-selling girl groups in K-pop history — filling stadiums across Asia and North America while gradually stretching into moodier, more mature territory.
As JYP trainees, TWICE grew up performing Wonder Girls' catalogue: Jihyo has said 'When we were trainees, we almost always used songs by the Wonder Girls. And we covered a lot of their songs in our showcases,' while Nayeon recalled that attending Wonder Girls concerts as a trainee was 'a great learning experience for us.' The label's retro-pop, hook-driven house style — inherited wholesale from its predecessor group — runs straight through TWICE's early, vintage-tinged singles.
listen forSet 'Nobody' beside 'Like Ooh-Ahh' — both open on a period-flavored synth hook and build an entire chorus out of one nonsense syllable repeated until it becomes the song's real title.
TWICE member Sana has said she first got interested in K-pop, over pursuing a career in Japan, because of Girls' Generation's rising popularity — one of several TWICE members whose path to idoldom runs through the group's 2009 breakout. 'Gee' set the template TWICE would inherit: a bright, maximalist lead single built to be more viral event than song, anchored by a hook simple enough for an entire country to sing back within a week.
listen forPlay 'Gee' next to 'Feel Special' — both drop a huge, instantly memorable hook within the first fifteen seconds and lean on pure repetition as the chorus's real engine.
Reviewing 'Cheer Up' for Fuse, critics Jason Lipshutz, Tina Xu, and Jeff Benjamin described it as a '1990s pop throwback reminiscent of Britney Spears' "...Baby One More Time"' — pointing to its schoolgirl-adjacent concept, retro synths, and stacked, chirpy hooks. It's a reminder that TWICE's bubblegum K-pop descends as much from late-'90s American teen pop as from any domestic lineage.
listen forCompare '...Baby One More Time' with 'Cheer Up' — both ride a bouncy, syncopated synth-and-drum hook under a coy, sing-songy vocal that turns an admission of vulnerability into something you can dance to.