The polyphonic perception video has gone viral on Twitter/X and TikTok Find out what is “Polyphonic Perception,” as social media personality Brelle the Nail Connoisseur claims that she has it and that it gives her a new rare ability. Not sure of what we are talking about? Here’s the brief. Earlier, a TikTok user Brelle claimed that she has polyphonic perception and it gave her the new ability to identify a beat.