The jingle comes from Mega Man 4, the 1991 platformer for the NES. It plays on the stage-clear screen after Mega Man defeats one of the eight Robot Masters, a core ritual of the classic series. As retro gaming nostalgia grew on video platforms and speedrunning streams, short rips of the fanfare began circulating in compilations and soundboards. Creators still reach for it because it is instantly recognizable to retro fans, lasts only a few seconds, and signals a clear win without any dialogue.