Sonata in C minor, K.303, L.9
Baroque Sonata Piano solo ~4 min
In brief

This C minor sonata feels taut and incisive, driven by sharp rhythmic exchanges, chordal leaps and articulated figures that give a sense of brusque momentum rather than smooth ornamentation. Technically, Harmonic analysis (3.6/5) is important here to anticipate and shape the chordal progressions and modulating passages so you can phrase dynamics accordingly, and Bass-clef reading (3.1/5) requires precise left‑hand gestures—accurate leaps, sustained voices and control of the bass line—to keep the counterpoint clear. It belongs to the Baroque period and to Scarlatti's extensive output of keyboard sonatas, short pieces that combine rhythmic invention with virtuosic challenges for the performer.

MusicCoach difficulty
82/100
Master repertoire
Likely range : 70–94/100
Confidence : 40% · to confirm
BeginnerIntermediateAdvancedVirtuoso
Exam grade
About grade 8

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.

Does this rating look right to you?

This rating is computed automatically from heterogeneous sources. It gets things wrong, sometimes badly. If you know this work, your answer is worth more than our computation: it tells us which ratings to review.

Add a note (optional)

Your note is not published on the site: it is read in review.

Relative difficulty
97%
Among Domenico Scarlatti
96%
Era Baroque
94%
Genre
Estimated skills
Theory
Harmonic analysis
1
Theory
Knowledge of forms
1
Reading
Bass clef reading
1
Ornaments
Baroque ornaments
1
Style
Baroque style
1
Technique
Double notes
1
Technique
Hand independence
1
Technique
Legato
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