7 Piano Variations on "Willem van Nassau" D major K. 25
Variations Piano solo 6 min
In brief

The work feels playful and dance-like, built on a simple tune that is continually transformed by small ornaments and changes in texture. You will need to focus on Connaissance des formes (3.8/5): here that means identifying clearly the theme and each variation so you can proportion energy and repeats, keeping structural logic across the set. Phrasé (2.5/5) is a concrete challenge in shaping short motifs and cadences without exaggeration — practice controlling hand weight and maintaining a sense of breath in very brief phrases. In Mozart's catalogue this piece belongs to his keyboard variations and exemplifies the typical way the composer explores a theme through successive small transformations.

MusicCoach difficulty
49/100
Intermediate
Likely range : 43–54/100
Confidence : 55% · fair confidence
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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Difficulty sources
Henle Verlag
5
50/100 normalised · 3 obs.
Relative difficulty
49%
Among Wolfgang Amadeus Mozart
50%
Era
30%
Genre
Estimated skills
Theory
Harmonic analysis
1
Theory
Knowledge of forms
1
Style
Classical style
1
Sight-reading
Sight-reading
1
Technique
Legato
2
Interpretation
Dynamics
2
Interpretation
Phrasing
2
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