Organ Sonata in A major, Wq.70, no. 1
Classical Sonata Piano solo ~8 min
In brief

The A major sonata feels bright and sprightly, alternating sparkling right‑hand passages with more succinct replies that call for clarity and lightness rather than broad lyricism. Technically, the Analysis harmonique (3.6/5) here means anticipating modulatory turns and adjusting finger distribution and chord density to bring out the bass and inner voices, while Phrasing (2.5/5) requires fine legato control and nuanced attacks to shape small motifs without weighting the line. The piece belongs to the Classical period and is part of C.P.E. Bach’s keyboard sonatas, reflecting his taste for expressive contrasts within clear forms. I do not provide a recommended reference recording because I prefer not to mention performers unless I am fully certain they are closely associated with this specific sonata.

MusicCoach difficulty
48/100
Intermediate
Likely range : 36–60/100
Confidence : 35% · to confirm
BeginnerIntermediateAdvancedVirtuoso
Exam grade
About grade 5

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
49%
Among Carl Philipp Emanuel Bach
49%
Era Classical
20%
Genre
Estimated skills
Theory
Harmonic analysis
1
Theory
Knowledge of forms
1
Style
Classical style
1
Technique
Legato
1
Interpretation
Dynamics
1
Interpretation
Phrasing
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.

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