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.

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.

I wouldn't care to speculate about what it is in Westlake's psyche that makes him so good at writing about Parker, much less what it is that makes me like the Parker novels so much. Suffice it to say that Stark/Westlake is the cleanest of all noir novelists, a styleless stylist who gets to the point with stupendous economy, hustling you down the path of plot so briskly that you have to read his books a second time to appreciate the elegance and sober wit with which they are written.

I've always loved opera; it never occurred to me that I would write a proper libretto. One of my closest friends is a composer, Paul Moravec, and a few years ago, Paul and I were at lunch, and I said to him, "you really have to write an opera." So, he says very casually to me, "I'll do it if you write the libretto." Well, little did I know that the within a couple of years we would end up getting a commission from the Santa Fe Opera to write an opera together, "The Letter," which turned out to be the most successful commissioned opera in the history of the Santa Fe Opera.

Your regional newspaper, and I like to use this example, in your local museum buys a Picasso, that's news especially if they've spent $10 million for it. But if you don't have a credit on your staff then you don't have anybody who's confident to say whether or not it was a good Picasso, might even be aware of the fact that there are bad Picassos. Arts journalists who don't have the experience of criticism, the skill of criticism, don't think in terms of critical evaluation are not going to be as good a journalist as they might be.

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.

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.