Ernest Nathan's 'Cinq-Mars' fantaisie concertante is a virtuosic piano work drawing inspiration from the opera of the same name, featuring dramatic flair and demanding technique. It often includes brilliant runs and bold thematic statements.
Requires strong finger dexterity and power to execute the rapid scales and octave passages effectively.
'Cinq-Mars' fantaisie concertante (Op.93) 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 'Cinq-Mars' fantaisie concertante (Op.93) lasts about 7.5 minutes.
'Cinq-Mars' fantaisie concertante (Op.93) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.