Circle X is part of a series of contemporary piano pieces that utilize modern harmonic structures. It is characterized by its reflective mood and careful attention to sonic decay.
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 rubato that must breathe naturally without losing the pulse.
Prioritize seamless transitions between phrases using subtle 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.
Lesser-known works by the same hand, at a comparable level.
Circle X 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 Circle X lasts about 3 minutes.
Circle X 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 Circle XI by Kees Schoonenbeek, Circle XII by Kees Schoonenbeek, Bal Masqué by Kees Schoonenbeek — see the full similar-pieces list on this page.