Rufus Lin's Ballade is a contemporary work often written in a neo-Romantic, accessible style. It focuses on melodic expression and expressive phrasing rather than extreme technical virtuosity.
The primary challenge is maintaining a long, singing melodic line while balancing the supporting accompaniment chords.
Comparable difficulty and character — good candidates for what to learn next.
Ballade is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 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 Ballade lasts about 4 minutes.
Ballade 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 Ballade by Rufus Lin, At That Time by Rufus Lin, At That Time by Rufus Lin — see the full similar-pieces list on this page.