This is a set of symphonic adaptations based on poems by A. Theuriet, offering orchestral colors translated for the piano. The music likely explores rich harmonies and melodic lines reflective of late Romantic sensibilities.
Focus on capturing the orchestral textures and expressive melodic phrasing.
Adaptations symphoniques sur les poésies de A. Theuriet is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
Adaptations symphoniques sur les poésies de A. Theuriet is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.