The sound comes from the RMS Queen Mary 2, the flagship ocean liner operated by Cunard Line, and captures the deep horn the ship uses to signal departure and arrival. Horn recordings like this have circulated widely among ship enthusiasts and video editors, who reuse them to give land-based clips a maritime, larger-than-life feel. Its length and sustained tone make it especially useful for edits, because it can sit under a title, a transition or a slow reveal without sounding clipped. That practical, instantly recognisable quality keeps it in regular use.