Duet
A TikTok feature that puts your video side by side with someone else's, so both play at the same time.
Duets are used to react to a video, sing along, add commentary, or join a trend by playing opposite the original. The new video credits and links back to the original creator.
Creators choose whether their videos can be duetted, per video or for the whole account. Instagram's Remix does much the same for Reels.
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