One Writer for Book, Music, & Lyrics? — Page 2

Plus other unknown show by people like Dan Goggin, and SEVERAL show by authors already mentioned (Noel Coward, George M Cohan).

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Willy Russell – Blood Brothers

Actually, Clark Gesner did write all of "Charlie Brown" himself. "John Gordon" was a made-up name, since Clark thought it would look like a vanity project if he took credit for all of it. I think he also said that since a lot of the book came from the original cast's improvs (and the comic strip), he used the "John Gordon" name as much as a nod to them. But the show is entirely Clark's.