Léonie Tonel was a French pianist and composer whose salon music often centers on salon-style elegance. The piece is characterized by its graceful, rolling broken-chord patterns typical of 19th-century French character pieces.
Mastering the wrist rotation necessary for the consistent flowing motion is essential for a polished performance.
Comparable difficulty and character — good candidates for what to learn next.
Au gré des flots (Op.7) is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 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 Au gré des flots (Op.7) lasts about 3 minutes.
Au gré des flots (Op.7) 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 Alice by Léonie Tonel, Bridal Gifts by Léonie Tonel, Arabesque No. 1 by Claude Debussy — see the full similar-pieces list on this page.