This book seeks primarily to continue a work of memory and constitution of a written heritage of improvised music. He also strives to build bridges between genres, offering two fairly sealed universes (written classical music and improvised jazz music) the same support for work. - The jazz musicians, these transcriptions will penetrate the heart of the work of one of the most outstanding jazz pianists of his time through his first solo album. - For musicians with classical training, these transcriptions will allow you to discover improvised music from the inside. - For everyone finally, and to better enter the universe of the musician, these transcriptions are enriched by an interview with the composer and texts offering some keys to understanding all that makes the beauty and the completion of this album Elegiac Cycle. Brad Mehldau is an American pianist who has been able to make some very nice covers of Rock and Pop band such as Radiohead, The Beatles or Oasis. Complete transcription and analysis by Philippe André.