TikTok Duet
TikTok feature: record your own video side-by-side with someone else's. Reactions, harmonies, parodies. Drives a lot of the platform's virality. Original creator is credited + gets traffic.
Stitch is a variant: clip from someone else's video as intro to your own (max 5 sec). Both configured per post — creator can opt out. Classic use: musicians duet with fans, reaction content, "guess the song" memes. Instagram Reels and YouTube Shorts copied (Remix/Remix). Drives creator economy: a viral duet chain can build a fanbase from zero. Algorithmic boost: TikTok favors duets because they create engagement loops.