This piece by the noted pedagogue Edward Kilenyi reflects the late Romantic obsession with motivic development and emotional intensity. It effectively uses diminished harmonies to suggest a sense of urgency.
Manage the voicing between the intense bass lines and the melodic material to ensure clarity.
Comparable difficulty and character — good candidates for what to learn next.
Anger Motive is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 6.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 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 Anger Motive lasts about 3 minutes.
Anger Motive 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 Piano Sonata No. 8 'Pathétique' by Ludwig van Beethoven, Balada mexicana by Manuel Ponce, Allegro Appassionato by Alexander Scriabin — see the full similar-pieces list on this page.