Book excerpt: In this book, Dr David Kraft surveys and evaluates Messiaen's use of birdsong and formulates a chronological and critical taxonomy of his music, covering the species involved and his evolving methods of manipulation, instrumentation and harmonic incorporation. He also explores issues relating to authenticity and modification with respect to the incorporation of birdsong in Messiaen's music. Further, he develops appropriate graphical and tabular methods in order to help the reader better to understand his music. This book is essential reading for those who love Messiaen's music. It is also a useful handbook for those studying at GCSE, A level, degree and postgraduate level. I hope that you enjoy reading this book, and trust that you will continue to enjoy the unique sound world of Olivier Messiaen.