The most technically demanding of the series, featuring expansive keyboard writing that pushes the limits of standard Romantic pianism. It exhibits a high degree of structural freedom and emotional intensity.
Mastering the wide-span chordal passages is essential to prevent fatigue during the more fortissimo sections.
Comparable difficulty and character — good candidates for what to learn next.
Cambrian Ballade No. 4 is rated Henle level 8 of 9 — concert repertoire, roughly diploma level. In the RCM system it corresponds to about level 10.
You should be comfortable at Henle level 8 — meaning you can already play level 7–8 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 Cambrian Ballade No. 4 lasts about 10 minutes.
Cambrian Ballade No. 4 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 Cambrian Ballade No.3 by Joseph Holbrooke, Cambrian Ballade No. 1 by Joseph Holbrooke, Cambrian Ballade No. 2 by Joseph Holbrooke — see the full similar-pieces list on this page.