For Whom the Bell Tolls is a Metallica song from 1984, released on the album Ride the Lightning. Its opening bell became a recognizable dramatic cue far beyond metal fans, especially in short meme edits and ironic videos online. People use the clip to frame a moment as doomed, serious or epic in an exaggerated way. It stays popular because the bell is instantly identifiable, easy to cut around, and fills the same role as Hello darkness my old friend in reaction-style humor.