Within the context of the show, "sleep" is often interpreted as a metaphor for death, complacency, or losing one's edge in a hostile environment.
"Anti-Lullaby" is a haunting track composed by and Geoff Barrow for the soundtrack of the Amazon Prime series Hanna . Unlike a traditional lullaby designed to soothe, this song serves as a psychological anchor for the protagonist, a young girl trained to be an elite assassin. Meaning and Themes
The song uses a slow, rhythmic pulse that mimics a heartbeat but feels unsettling rather than comforting.
The song's core purpose is to maintain a state of hyper-vigilance rather than sleep.