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Play — Seong-Jin Cho – Prelude in B flat major Op. 28 No. 21 (third stage) · Chopin Institute (the player loads on click)
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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.
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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Each suggestion combines difficulty gap, risk, confidence and skill overlap. The first two cards in each column are the most useful pedagogically.
The safest next step.
A genuine step up, without a jolt.
A useful leap with guided practice.
This short piece in B-flat major has a reflective, luminous character, with a simple melodic line that calls for clarity and a held-back tension rather than flashy gestures. You will specifically face Phrasing (2.5/5) — here that means shaping each small phrase and highlighting its high points to maintain seamless musical flow — and Touch control (2.5/5), which requires adjusting hand weight and finger distribution so the melody floats above a very soft accompaniment. The Prelude belongs to the set of Preludes Op.28, a cycle of brief pieces that explores varied moods and holds a central place in Chopin’s piano output. I do not provide a reference recording because I am not completely certain of a single widely recognized benchmark interpretation for this particular piece.