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Play — Bach - WTC I Prelude and fugue no. 18 in G-sharp minor BWV 863 - Bernolet | Netherlands Bach Society · Netherlands Bach Society (the player loads on click)
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Play — Prelude and Fugue: No. 18 in G-Sharp Minor, BWV 863 · Johann Sebastian Bach, Sviatoslav Richter (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.
The Prelude and Fugue No.18 in G-sharp minor unfolds a contemplative, taut character where repeating figuration and tightly interwoven lines produce an inward tension rather than broad lyricism. The main technical challenges are rooted in Style baroque (4.6/5) and Polyphonie à trois voix ou plus (4.4/5): you will need strong hand independence and voice-leading control, using precise fingering and subtle articulation to bring out inner voices while preserving linear continuity and clarity. The piece is part of Bach’s central keyboard contrapuntal collection that systematically explores all keys, which accounts for its contrapuntal density and formal rigor.