Piano Sonata No. 9
Sonata Piano solo
In brief

The piece has a bright, lively character, alternating jaunty right-hand figures with steady accompaniments that require clear articulation to bring out the contrasts. You will specifically face Technique générale (2.5/5) — requiring independent fingers and relaxed, even motion for scales and quick figures — and Phrasing (2.5/5) — which here means shaping melodic lines with slight connections and softened attacks rather than broad rubato. The exact place of this sonata in Mozart's catalogue is uncertain, but it belongs to his works for solo piano and follows the typical sonata forms and conversational textures of the genre. I do not provide a reference recording here because I cannot confidently confirm a specific authoritative interpretation for this particular work.

MusicCoach difficulty
52/100
Intermediate
Likely range : 40–64/100
Confidence : 35% · to confirm
BeginnerIntermediateAdvancedVirtuoso
Exam grade
About grade 5 to 6

Estimated from our difficulty score, not taken from an exam syllabus. Checked against 333 works on the ABRSM syllabus: the exact grade is right 7 times out of 10, and within one grade 99 times out of 100.

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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Relative difficulty
88%
Among Mozart
58%
Era
31%
Genre
Estimated skills
Theory
Harmonic analysis
1
Technique
Hand independence
1
Interpretation
Dynamics
1
Interpretation
Phrasing
1
Style
Classical style
1
Technique
General technique
1
What to play next?

Each suggestion combines difficulty gap, risk, confidence and skill overlap. The first two cards in each column are the most useful pedagogically.

See the whole progression