This piece by Pedro Astort Ribas utilizes dramatic shifts in dynamics and mood to reflect its titular tension. It is a compelling example of regional Iberian late-romantic piano music.
At Henle 4 this is an intermediate piece that expects secure technique and real attention to phrasing. The main demands: sharp dynamic and character contrasts held together in one arc; chord voicing — bringing out one note inside a handful of others; and rubato that must breathe naturally without losing the pulse.
Manage the dynamic extremes to create effective tension and release.
Comparable difficulty and character — good candidates for what to learn next.
A level or two down with the same spirit — ideal if this piece is still out of reach.
Where this piece's skills lead: slightly harder works making similar technical demands.
Lesser-known works by the same hand, at a comparable level.
Crisis is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
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 Crisis lasts about 4 minutes.
Crisis 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 Boston-Waltz by Pedro Astort Ribas, Prelude in C-sharp minor, No. 2 by Sergei Rachmaninoff, Passacaglia by George Frideric Handel — see the full similar-pieces list on this page.