Anticipation is reaching a fever pitch among fans as SM Entertainment's beloved girl group, Red Velvet, gears up for their highly-anticipated comeback with their 3rd album, 'Chill Kill.'

The group has firmly established itself as one of South Korea's top K-pop acts, thanks to their distinct grim-fairytale concepts. Now, they're poised to unveil another enchanting album, stoking excitement among their dedicated followers.

On November 9, Red Velvet treated fans to their first music video teaser, providing a glimpse into the full concept of their album. As expected, the video did not disappoint, delivering an eerie narrative that left viewers spellbound. Accompanied by an audio track that sent shivers down the spine, the teaser set the tone for what's to come.

What's even more astonishing is that fans have uncovered a hidden gem. By playing the teaser's audio in reverse, the compelling sound of the girl group's upcoming new track is revealed, adding another layer of mystery and excitement to the upcoming release.

K-netizens were impressed by this discovery and commented, "This is so scary," "Oh wow, this is impressive," "I'm getting chills down my back," "Let's go," "This is so interesting," "I think it's also fun to discover things like this," "This is creepy," "How did anyone think to even play the teaser backwards?" "Red Velvet is so crazy with their concepts," "Wow, this is so crazy, I won't be able to sleep," "This reminds me of those scary stories of listening to tapes backwards to discover a hidden message," and "This is so cool but also chilling."