If you're doing an interview, you need conversational tension. After you talk to them, you're not going to have a relationship with them, they're not going to like you, they're not going to be your friend.
The biggest problem in rock journalism is that often the writer's main motivation is to become friends with the band. They're not really journalists; they're people who want to be involved in rock and roll.
I was fortunate that I was at newspapers for eight years, where I wrote at least five or six stories every week. You get used to interviewing lots of different people about a lot of different things. And they aren't things you know about until you do the story.
The essays are different because ultimately it's things I'm interested in, and I'm really just writing about myself and using those subjects as a prism.