Louis Gregh was a popular French light-music composer whose Elegy is charming and structurally straightforward. Its appeal lies in its clear melody and predictable, elegant phrasing.
At Henle 3 this is a late-beginner piece — comfortable hands-together playing is assumed, and musical shaping starts to matter. The main demands: a true singing tone, with the melody floating above the accompaniment; precise articulation — the difference between crisp and blurred is the piece; and chord voicing — bringing out one note inside a handful of others.
Focus on the clarity of articulation in the melodic ornaments.
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.
Elegy (Op.9) is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 5.
You should be comfortable at Henle level 3 — meaning you can already play level 2–3 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 Elegy (Op.9) lasts about 3 minutes.
Elegy (Op.9) 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 Au petit trot by Louis Gregh, Valse sentimentale, No. 6 by Pyotr Ilyich Tchaikovsky, Berceuse da Boneca Triste by Oscar Lorenzo Fernández — see the full similar-pieces list on this page.