Piano Sonata no. 9 in F, op. 68, "Black Mass"
Romantic Sonata Piano solo ~9 min
In brief

This Sonata projects a dark, ritualistic character, built from dense sonorities, tight dissonances and sudden dramatic surges that feel more like a violent nocturne than a tranquil melody. A key technical challenge will be Harmonic analysis (3.6/5) — you will need to read and anticipate chromatic progressions and stacked chords to select clear fingerings — and the Sustain pedal (3.1/5), requiring precise pedalling to preserve voice clarity while managing long resonances. Placed in the Romantic period, the work is one of the composer's later pieces where the tonal language becomes denser and turns toward a more introspective, mystical expression. I have not listed a reference recording here out of caution, but I can suggest well-regarded interpretations if you wish me to search for them.

MusicCoach difficulty
92/100
Master repertoire
Likely range : 84–99/100
Confidence : 55% · fair confidence
BeginnerIntermediateAdvancedVirtuoso
Exam grade
Beyond grade 8

The grade scale stops at 8; this work belongs to concert or diploma repertoire.

Difficulty estimate by MusicCoach on a scale of 1 to 100.

Where this work sits
050100

Most works cluster between 45 and 65: a small score gap often marks a real step. The highlighted bar shows this work among those for the same instrument.

The MusicCoach difficulty measures a work's overall demands (technique, reading, stamina) on a shared 0-100 scale, consolidated from editorial and pedagogical reference points (Henle, exam syllabuses, curation) and our own analyses. It measures neither musical value nor the practice time YOU will need: two musicians of the same level can experience the same work very differently depending on their strengths (hands used to octaves, quick sight-reading…). The confidence reflects how many reference points sit behind the score and how well they agree — a lightly documented score is flagged “to validate”. For a truly personal bearing, the diagnostic and your space compare each work to YOUR estimated level, which the score alone cannot do.

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Difficulty sources
Henle Verlag
9
95/100 normalised · 2 obs.
Relative difficulty
98%
Among Alexander Scriabin
99%
Era Romantic
99%
Genre
Estimated skills
Theory
Harmonic analysis
1
Theory
Knowledge of forms
1
Pedaling
Sustain pedal
1
Style
Romantic style
1
Rhythm
Tempo rubato
1
Tone
Touch control
1
Interpretation
Phrasing
1
Technique
Two-voice polyphony
1
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