Enric Morera was a central figure in Catalan music, and his Elegia features the rich, dark harmonic textures characteristic of the Spanish Romantic school. It is noted for its powerful emotional arc and dense chordal writing.
At Henle 5 this is a late-intermediate piece — technically substantial, with musical demands to match. The main demands: a true singing tone, with the melody floating above the accompaniment; rubato that must breathe naturally without losing the pulse; and big chords that need weight without harshness.
Beyond that, expect chord voicing — bringing out one note inside a handful of others.
The main difficulty lies in projecting the melodic line above the heavy, resonant chordal accompaniment.
Comparable difficulty and character — good candidates for what to learn next.
A level or two down with the same spirit — ideal if this piece is still out of reach.
Where this piece's skills lead: slightly harder works making similar technical demands.
Elegia is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 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.
A typical performance of Elegia lasts about 6 minutes.
Elegia 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 Asturias (Leyenda) by Isaac Albéniz, Dumka by Antonín Dvořák, Elegy No.1 by Franz Liszt — see the full similar-pieces list on this page.