A charming and straightforward character piece, it exemplifies the light, amateur-oriented music of the period. Its structure is repetitive and easy for the listener to follow.
At Henle 3 this is a late-beginner piece — comfortable hands-together playing is assumed, and musical shaping starts to matter. The main demands: precise articulation — the difference between crisp and blurred is the piece; a true singing tone, with the melody floating above the accompaniment; and fine finger independence within the hand.
Practice clean articulation and clear phrasing to bring out the elegant character of the main theme.
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.
Doux souvenir (Op.123) is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 3.
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 Doux souvenir (Op.123) lasts about 2 minutes.
Doux souvenir (Op.123) 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 Waltz No. 2 by Dmitri Shostakovich, Waltz in A minor by Frédéric Chopin, Amapola by Joseph M. Lacalle — see the full similar-pieces list on this page.