As hard as it is, as ghetto as it is, hip-hop is pop music. It's the sound of music getting out of the ghetto, while rock is looking for a ghetto.
Particularly conservative Christians, I was very angry that they were not involved more in the AIDS emergency.
Sub-Saharan Africa is also home to 400 million of the world's poorest people.
The great moments of rock 'n' roll were never off in some corner of the music world, in a self-constructed ghetto.
U2 was involved in Live Aid, and I ended up going to Ethiopia and working there for some time with my wife, Ali.
You've got to watch the politics of AIDS. The politics of AIDS can work both for and against the victims of AIDS.
Hanging out with politicians and corporations is very unhip work. But I think that the U2 audience have turned out to be incredibly subtle in their understanding.
The great music for so many artists - the Beatles, the Rolling Stones - was always at the moment when they were closest to pop. It would be easy for U2 to go off and have a concept album, but I want us to stay in the pop fray.
Let's not bequeath the pop charts to just children.
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