Vincent Adler's work is typical of the 19th-century salon-concert style, emphasizing bravura passage work. Its distinctiveness lies in the contrast between lyrical melodic episodes and highly athletic technical flourishes.
Ensure the cantabile melody remains projected over the turbulent arpeggiated accompaniment.
Comparable difficulty and character — good candidates for what to learn next.
Allegro de Concert pour piano is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 9.
You should be comfortable at Henle level 6 — meaning you can already play level 5–6 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 Allegro de Concert pour piano lasts about 7 minutes.
Allegro de Concert pour piano 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 by Vincent Adler, Allegro de concert by Vincent Adler, Ballade pour piano by Vincent Adler — see the full similar-pieces list on this page.