Giuseppe Martucci was a leading figure in late 19th-century Italian instrumental music. This Op. 13 is a demanding, virtuosic work that highlights the bridge between Romanticism and late-century emotional complexity.
Requires highly developed forearm technique to manage the dense, emotional chordal sequences.
Comparable difficulty and character — good candidates for what to learn next.
Allegro appassionato op.13 is rated Henle level 7 of 9 — late advanced repertoire, roughly ABRSM grade 8 and above. In the RCM system it corresponds to about level 10.
You should be comfortable at Henle level 7 — meaning you can already play level 6–7 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 appassionato op.13 lasts about 7 minutes.
Allegro appassionato op.13 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 Capriccio di concerto by Giuseppe Martucci, Ballade No.1 by Frederic Chopin, Ballade No.4 by Frederic Chopin — see the full similar-pieces list on this page.