Bachianas Brasileiras No. 4 is a suite of four movements for orchestra, with a piano reduction available. It blends Baroque contrapuntal techniques with Brazilian folk melodies and rhythms.
Requires a sensitive touch to balance the complex textures and bring out the distinct melodic lines.
Bachianas Brasileiras No.4 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.
Bachianas Brasileiras No.4 is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.