“[Lily Arbisser] hopes to someday sing center stage at New York’s Metropolitan Opera, but for now, she works there behind the scenes as a cue-caller: the person responsible for making sure an opera’s subtitles appear at exactly the moment when the performers onstage sing their lines. Each night’s performance is slightly different, and if the timing isn’t just right, it can ruin the punch line to a joke or give away major spoilers.” (audio)