The line comes from the opening of Simon and Garfunkel's The Sound of Silence, a folk song that became widely known in the 1960s. Online, the phrase Hello darkness my old friend took on a second life as a short meme sound, often played when someone enters a room, faces an awkward situation or confronts an unwelcome truth. Its slow, sombre delivery makes even a small moment feel cinematic, which is why editors keep reusing it across short videos, reaction clips and comedy edits years after the song first became famous.