This delicate work conveys a sense of archaic nobility and mourning through its archaizing harmonic language. It is celebrated for its graceful, balanced melody that requires a refined, expressive touch.
Achieving a seamless, singing tone in the upper register while keeping the accompaniment subtle is the most difficult aspect.
Comparable difficulty and character — good candidates for what to learn next.
Pavane pour une infante défunte is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 8.
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.
A typical performance of Pavane pour une infante défunte lasts about 6 minutes.
Pavane pour une infante défunte is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include Berceuse sur le nom de Gabriel Fauré, M.74 by Maurice Ravel, Berceuse sur le nom de Gabriel Fauré by Maurice Ravel, Quejas, o la maja y el ruiseñor by Enrique Granados — see the full similar-pieces list on this page.