Mr. Sandman was recorded by The Chordettes and became a major hit in 1954, helping define the polished close-harmony pop sound of the era. Online, short excerpts have stayed popular because the song is instantly familiar and easy to contrast with modern visuals. It appears in nostalgic edits, surreal memes and playful transition videos, where its warm 1950s tone can make a scene feel innocent, uncanny or deliberately old-fashioned.