Around 1960 Olivier Messiaen began a large-scale concerto based on the birds of the Hérault region ( Oiseaux de l Hérault ) for piano various soloists and orchestra. Although the project remained unfinished the solo piano part was quite developed. The Olivier Messiaen Foundation entrusted Roger Muraro a renowned interpreter of Messiaen s piano works with organizing the sketches and manuscripts found in the composer s archives. This new publication emerged from Muraro s research. The study that opens the volume describes his methods in detail discussing among other issues the relationship of this work to the later Sept Haïkaï. Richly illustrated with a number of facsimiles musical examples and photographs Muraro s introduction retraces the origins and historic context of the work invites the reader to enter the composer s workshop and offers suggestions for performance. Fauvettes de l Hérault Concert des garrigues for solo piano is a concerto without orchestra that blends reference to Claude Debussy a thinly veiled homage to Yvonne Loriod new birdsong from the Hérault region and the vast palette of rhythm timbre and colour that are typical of Olivier Messiaen s musical universe. Around 1960 Olivier Messiaen began a large-scale concerto based on the birds of the Hérault region ( Oiseaux de l Hérault ) for piano various soloists and orchestra. Although the project remained unfinished the solo piano part was quite developed. The Olivier Messiaen Foundation entrusted Roger Muraro a renowned interpreter of Messiaen s piano works with organizing the sketches and manuscripts found in the composer s archives. This new publication emerged from Muraro s research. The study that opens the volume describes his methods in detail discussing among other issues the relationship of this work to the later Sept Haïkaï. Richly illustrated with a number of facsimiles musical examples and photographs Muraro s introduction retraces the origins and historic context of the work invites the reader to enter the composer s workshop and offers suggestions for performance. Fauvettes de l Hérault Concert des garrigues for solo piano is a concerto without orchestra that blends reference to Claude Debussy a thinly veiled homage to Yvonne Loriod new birdsong from the Hérault region and the vast palette of rhythm timbre and colour that are typical of Olivier Messiaen s musical universe.