A more substantial work for piano, this overture attempts a dramatic, symphonic scope within a solo medium. It is distinctive for its use of octave-heavy textures and sudden dynamic shifts intended to simulate an orchestral palette.
The primary technical hurdle is controlling the large chordal passages without sacrificing dynamic clarity.
Comparable difficulty and character — good candidates for what to learn next.
1914 Overture (Op.1) is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 7.
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 1914 Overture (Op.1) lasts about 6 minutes.
1914 Overture (Op.1) 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 1914 Overture by Oliver Wilder Welles, Ballata by Ernest Chausson, Alla Marcia, Canzonetta und Scherzo for Piano by Adolf Jensen — see the full similar-pieces list on this page.