Botoru by Kio Song is an evocative contemporary piece with a unique rhythmic drive. It challenges the performer to balance technical clarity with expressive phrasing.
Work on independence of fingers to bring out the subtle inner voices.
Comparable difficulty and character — good candidates for what to learn next.
Botoru is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 4.
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 Botoru lasts about 3 minutes.
Botoru 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 Boissons by Kio Song, Gymnopédie No. 1 by Erik Satie, Gymnopédie No. 3 by Erik Satie — see the full similar-pieces list on this page.