"What separates U2 from most other people who do this? It is in the show. It's rage. And that's where we started and went."
- Larry Mullen, 2015
Get On Your Boots is about Bono taking his family on vacation to France and witnessing warplanes flying overhead at the start of the Iraq War. The chant "let me in the sound" was developed late in the recording sessions and became a theme throughout parts of the album.