Beryllisations No.4 functions as a technical etude emphasizing agility and precise rhythmic placement. The piece utilizes rapid figurations that challenge the pianist's finger independence and dynamic control.
The primary challenge is maintaining evenness of tone during fast, light passage work.
Comparable difficulty and character — good candidates for what to learn next.
Beryllisations No.4 is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 7.
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 Beryllisations No.4 lasts about 3 minutes.
Beryllisations No.4 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 Beryllisations No.7 by Jailton de Oliveira, Beryllisations No.3 by Jailton de Oliveira, Beryllisations No.1 by Jailton de Oliveira — see the full similar-pieces list on this page.