Virgil Thomson, the great classical music critic, who was also a composer, but said that criticism was the only antidote he knew to pay publicity. Critics at their best are independent voices people take seriously their responsibility to see as many things as they can see, put them in the widest possible perspective, educate their readers, I really do think of myself as a teacher. Newspapers that don't carry arts criticism at all while not fulfill this function. And probably their arts journalism will be deprived as a result.

I'm especially interested in what I call practitioner criticism, which is when people who practice an art form start writing about it on blogs. I think that's an immensely important development. I want to see much, much more of that. People who make music who are verbally articulate. And not all musicians are verbally articulate. But those who are should be encouraged to write about what they do and their perception of what other people do. It makes the discourse smarter.

I had a checklist in my mind of the things that make a biography practical. Is the source material centralized? Is it easy to find? Are there new primary sources that no one has ever had access to? Are all the sources in English? If they're not, are they in a language that you speak? And I realized that not only is Armstrong the most important figure of Jazz in the 20th Century, but he's a perfect subject for a biography for all of these reasons. I had always loved his music and I had been fascinated in him as a personality. And that's really the key to writing a biography.

Blogging has mostly been an opportunity to react more immediately to experiences to try out ideas that I may end up using in the print media or in some other place. When I write books, it's a way for me to bring readers into the experience of writing the book, all through the process of writing the books that I write. I talk about what I'm up to in the blog. I let people know what I am doing. To me, it's just part of putting my professional life up in a way that people who are interested in it can access; and learning things from them as well.

Virgil Thomson, the great classical music critic, who was also a composer, but said that criticism was the only antidote he knew to pay publicity. Critics at their best are independent voices people take seriously their responsibility to see as many things as they can see, put them in the widest possible perspective, educate their readers, I really do think of myself as a teacher. Newspapers that don't carry arts criticism at all while not fulfill this function. And probably their arts journalism will be deprived as a result.

Whether early or late, the Parker novels are all superlative literary entertainments.

I was interested in Armstrong to begin with because he is the most important figure in Jazz in the 20th Century. There's simply no question about it. I mean, if you're going to compare him to somebody, it's Shakespeare in terms of centrality of the tradition, in being at the beginning of it.