Olivier Messiaen
He took this development to a new level with his 1953 orchestral work . Its material consists almost entirely of the birdsong one might hear between midnight and noon in the Jura. From this period onward, Messiaen incorporated birdsong into his compositions and composed several works for which birds provide both the title and subject matter (for example the collection of 13 piano pieces  completed in 1958, and  of 1971). Paul Griffiths observed that Messiaen was a more conscientious ornithologist than any previous composer, and a more musical observer of birdsong than any previous ornithologist.