This kind of short sad brass clip is widely shared online as a ready-made reaction sound, rather than tied to one famous recording. Editors reuse it because the drooping melody is instantly readable, even to viewers who have never heard the full piece it resembles. On short-form video and in meme edits, it has become shorthand for a failed plan, a lost game or an anticlimax. Its staying power comes from that simplicity: one brief phrase says the joke is over, without needing words, captions or extra explanation.