This piece explores dodecaphonic structures as a base for dramatic pianistic gesture. It demands high intellectual engagement to organize the dissonant intervals into a coherent musical arc.
Achieving clarity within the intense, angular chord structures requires precise physical placement and large-hand control.
Comparable difficulty and character — good candidates for what to learn next.
Bosquejos inacabados entre doce sonidos Op.54 is rated Henle level 7 of 9 — late advanced repertoire, roughly ABRSM grade 8 and above. In the RCM system it corresponds to about level 10.
You should be comfortable at Henle level 7 — meaning you can already play level 6–7 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 Bosquejos inacabados entre doce sonidos Op.54 lasts about 6 minutes.
Bosquejos inacabados entre doce sonidos Op.54 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 Cadenza con o senza Beethoven by Frederic Rzewski, Ballade in G major Op.7 by Vladimir Mikhailovich Deshevov, 'Musical composition, an Ineffable Act between Fantasy and Rigour' by Liana Alexandra — see the full similar-pieces list on this page.