Henning Mankell's works often reflect Scandinavian introspection. This short ballade is marked by a personal, lyrical voice rather than typical grand-scale ballade heroism.
Pay close attention to the subtle shifts in articulation that define the piece's shifting mood.
Comparable difficulty and character — good candidates for what to learn next.
Ballade No.2 (Op.8) 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.
Ballade No.2 (Op.8) 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 No.5 by Henning Mankell, Ballade No. 1 by Henning Mankell, Ballade No.3 by Henning Mankell — see the full similar-pieces list on this page.