This clip comes from a user-uploaded soundboard entry simply titled 21 concert, with no confirmed artist, venue or date attached, so its exact origin remains unknown. Short concert recordings like this circulate widely online because they instantly sell the feeling of being at a live show. Creators layer them under edits, memes and skits to fake arena scale or to celebrate a big moment. Its staying power comes from that universal recognition: almost everyone knows the rush of a crowd erupting, which makes the sound useful across countless videos.