This colorful, highly virtuosic piano piece is often associated with the island of Jersey, where Debussy secretly spent the summer of 1904 with his new love Emma Bardac. Even if he wrote the autograph during this time, it has been ascertained that the work was composed at an earlier date and was intended as part of the Suite bergamasque. During his stay on the island, Debussy revised the composition, giving the Isle joyeuse its present-day form. We are publishing the manuscript as a valuable facsimile edition to mark Debussy's anniversary year 2012. In brilliant multicolour printing and with an extensive commentary, it meets the highest aesthetic and scholarly demands.