This intense work by Frank Bridge displays the late-Romantic bravura style with sudden shifts in dynamic texture. Its stormy character requires significant keyboard presence and emotional projection.
Focus on the coordination of rapid, sweeping chordal passages while maintaining melodic phrasing under the agitato sections.
Comparable difficulty and character — good candidates for what to learn next.
Allegro appassionato 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 9.
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 lasts about 3 minutes.
Allegro appassionato 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 No.2 by Franz Liszt, Bach- Toccata and Fugue in D Minor (Transcription) by Louis Brassin, Piano Sonata No. 23 'Appassionata' by Ludwig van Beethoven — see the full similar-pieces list on this page.