This meme sound comes from Let Her Go, the hit song by British singer-songwriter Passenger, released in 2012. Online editors began using a short emotional section as a good ending cue in meme videos, especially when a clip resolves in a sweet, lucky, or unexpectedly positive way. It spread across short-form video platforms and repost pages because the recognizable melody quickly signals that the story has landed on the best possible outcome. Its staying power comes from that instant emotional contrast.