Jean-Michel Guesdon is a musician, composer, and sound engineer. Together with Philippe Margotin, he has written All the Songs books about the Beatles, The Rolling Stones, Bob Dylan, and Pink Floyd.

In addition to writing multiple titles in the All the Songs series, Philippe Margotin has written several other books on music, including biographies of U2 and Radiohead. 

Scott Freiman combines his career as a composer, producer, and educator with an in-depth knowledge of the Beatles, and the result is "Deconstructing the Beatles", which is a series of multimedia presentations about the composition and production techniques of the Fab Four. Freiman presents his lectures to sold-out audiences throughout North America and at colleges and universities. He lives in Irvington, New York.