Bruckner's rare foray into solo piano composition reflects his symphonic sensibility, even in a small scale. It is characterized by intimate, hymn-like harmonic progressions and a reflective, almost spiritual character.
At Henle 4 this is an intermediate piece that expects secure technique and real attention to phrasing. The main demands: a true singing tone, with the melody floating above the accompaniment; careful pedaling — clarity depends on the foot as much as the fingers; and chord voicing — bringing out one note inside a handful of others.
The main challenge is achieving a deep, choral-like resonance through thoughtful finger-voicing and careful pedaling.
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.
Erinnerung, WAB 117 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 Erinnerung, WAB 117 lasts about 3 minutes.
Erinnerung, WAB 117 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 Clair de lune - piano by Claude Debussy, Solace by Scott Joplin, El Cant dels Ocells by Hideo Kamioka — see the full similar-pieces list on this page.