This piece by Dieter Salbert is a complex modern work exploring atmospheric textures and shifting tonal centers. It reflects the introspective, restless nature implied by its programmatic title.
The primary challenge lies in balancing the complex, layered textures while maintaining a coherent dramatic arc.
Comparable difficulty and character — good candidates for what to learn next.
Biographie einer unruhigen Stunde (Op.62) is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 9.
You should be comfortable at Henle level 6 — meaning you can already play level 5–6 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 Biographie einer unruhigen Stunde (Op.62) lasts about 8 minutes.
Biographie einer unruhigen Stunde (Op.62) 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 Biographie einer unruhigen Stunde by Dieter Salbert, "Todesfuge" by Dieter Salbert, Ballad by David Stanley Smith — see the full similar-pieces list on this page.