His fame as a writer and singer spread throughout the world from the Montmartre district of Paris, where he held sway. He was author of more than 1,000 songs and 39 musical comedies and operettas. When he came to America in 1921, it was for the purpose of acquiring American songs to be adapted for the public in France that liked "le Jazz." When he returned to France, he was crowned king of Montmartre.
Though Boyer was not the author of the famous French song Madelon, as was generally believed, Boyer popularized the song during World War I and all France marched to lieutenant