It started when TikTok user @babyratnose uploaded a clip pointing out a peculiar rising-and-falling synth noise hiding in the background of “TT.” Described by many as a ‘sliding whistle’ or a ‘sci-fi beep,’ the sound blends into the song so smoothly that most listeners missed it completely—until now.
he describes it so well istg i can’t listen to it anymore it’s so irritating pic.twitter.com/KZjk6qlgjI
— ☆ (@khiawings) July 25, 2025
Once it was noticed, fans across TikTok couldn’t help but focus on it. Comments flooded in saying things like, ‘Why did I never hear that before?’ and ‘Now I literally can’t unhear it.’ The video quickly went viral, setting off a chain of duets, memes, and remixes that spotlighted the sound even more.
What began as a fun observation turned into a full-on rediscovery. Streams of “TT” began to rise again, and fans took the chance to rewatch the music video and relive the classic TWICE era. For many, it was a reminder of how intricate kpop production can be, with tiny details tucked into the mix that only resurface years later.
Is it because of that one TikTok lmfao???????? https://t.co/qwmuBg8SsL
— Twicist (@BevyIchi) July 26, 2025
Those rising and falling sounds, often referred to as risers, are a common production technique used in electronic music to maintain the energy of a track flowing smoothly between sections. In “TT”, they add a sense of movement and momentum that fans might not consciously notice but definitely feel.
It’s moments like this that prove kpop songs are gifts that keep on giving, even long after their chart run is over. A single audio quirk, once buried beneath vocals and beats, became the reason thousands returned to a 2016 hit with fresh ears. And thanks to one curious fan with sharp ears, “TT” is back in the spotlight where it belongs.
