Diamant noir is a powerful, dark-hued work by the under-appreciated French composer Mel Bonis. It features dramatic shifts in register and intense, surging harmonic progressions.
At Henle 5 this is a late-intermediate piece — technically substantial, with musical demands to match. The main demands: sharp dynamic and character contrasts held together in one arc; sweeping arpeggio figures that must stay smooth across positions; and a left hand with real melodic or rhythmic responsibility of its own.
Beyond that, expect a true singing tone, with the melody floating above the accompaniment.
The challenge is managing the abrupt dynamic shifts and the rapid arpeggiated figures in the left hand.
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.
Diamant noir (Op.186) is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 8.
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 Diamant noir (Op.186) lasts about 5 minutes.
Diamant noir (Op.186) 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 Berceuse triste by Mel Bonis, Desdémona by Mel Bonis, Berceuse by Mel Bonis — see the full similar-pieces list on this page.