"So where does all music come from -- be it hip-hop or rock 'n' roll? I don't know. But I do know that all music is praise. It's praise to the god of your making. Which, in the case of a rock star, might be oneself. Or a woman. Or an idea."
- Bono, 2004
In the song 'Zooropa' there are a number of advertising slogans in the lyrics like 'Vorsprung Durch Technik' (Audi), 'Be all that you can be' (the Army), 'Eat to get slimmer' (Slim-Fast) and 'Fly the friendly skies' (United Airlines).