Duet

A Duet is a TikTok feature that lets users create content side-by-side with another user's existing video, appearing in a split-screen format. It’s a popular way to react, respond, collaborate, or add to someone else’s post—whether through comedy, dance, singing, or commentary.

Duets allow for creative interaction and community engagement without needing to film together in real life. They're often used for trends, challenges, or viral moments, making it easy for users to join in and put their own spin on existing content. For creators, Duets boost visibility and encourage audience participation—turning one post into a chain of creative responses.