Philippe Margotin has written numerous books on music, including biographies of U2 and Radiohead, as well as All the Songs: The Story Behind Every Beatles Release and Bob Dylan All the Songs: The Story Behind Every Track. He lives in Paris.

Patti Smith is a writer, performer and visual artist. She gained recognition in the 1970s for her revolutionary merging of poetry and rock. She has released twelve albums, including Horses, which has been hailed as one of the top one hundred albums of all time by Rolling Stone.

Smith had her first exhibit of drawings at the Gotham Book Mart in 1973 and has been represented by the Robert Miller Gallery since 1978. Her books include Just Kids, winner of the National Book Award in 2010, Witt, Babel, Woolgathering, The Coral Sea, and Auguries of Innocence.

In 2005, the French Ministry of Culture awarded Smith the prestigious title of Commandeur des Arts et des Lettres, the highest honour given to an artist by the French Republic. She was inducted into the Rock and Roll Hall of Fame in 2007. Smith married Fred Sonic Smith in Detroit in 1980. They had a son, Jackson, and a daughter, Jesse. Smith resides in New York City.

Jean-Michel Guesdon, a musician, composer, and sound engineer, who wrote with Philippe Margotin All the Songs: The Story Behind Every Beatles Release and Bob Dylan All the Songs: The Story Behind Every Track. He lives in Paris.