At the beginning of April, Instagram added a “remix” option to Reels that allows creators to react to an existing public Reel. Similar features — Duets and Stitch — have been popular on TikTok for some time, inspiring Snapchat to test a remix option as well.
Remix is enabled by default on Reels published from public accounts, but users have access to a disable option. When someone remixes a Reel, the original creator receives a notification.