Prelude in C major, BWV 846

Why this piece

Nearly the entire work unfolds through a repeating arpeggiated texture. Because the surface pattern remains recognizable, attention can shift to the harmonic journey underneath it. It turns the broken-chord skill learned from pop music into a disciplined classical study.

Musical profile

• Key / tonal centre: C major
• Meter: 4/4
• Suggested version: Original first prelude from The Well-Tempered Clavier, Book I.

Representative harmony

Successive arpeggiated harmonies include C, Dm7/C, G7/B and other inversions/secondary dominants before the return to C.

Practice loop

Bach's pattern is arpeggiated; use this only as a harmonic skeleton while reading the score.

What to listen for

Treat the written notes as the primary score; chord labels are an analytical aid. Follow the changing bass and the dominant-to-tonic pulls.

What to learn

Practice without pedal at first so uneven connections are audible. Decide on reliable fingering for each harmonic shape. Find the notes that change from one bar to the next and notice how they alter tension. Avoid making every measure a separate sentence; listen for the progression’s larger direction toward cadences.

Practice checkpoint

Play the prelude continuously at an unhurried tempo, with even patterns and a perceptible sense of harmonic arrival.

Diagnostic drill · E22 — Keep an arpeggio flowing across the hands

Target: Smooth hand distribution and chord-based reading.
Drill key / meter: C major · 4/4

Use this only when it addresses the current bottleneck. Skip it when the skill is already ready.

Steps

1. Play eight even eighth notes in one bar: LH C3–G3, then RH C4–E4–G4–E4–C4, then LH G3. This is an invented study figure, not Bach’s exact pattern.
2. Repeat on F major (F2–C3 / F3–A3–C4–A3–F3 / C3) and G7 (G2–D3 / G3–B3–D4–F4–D4 / D3), adapting the distribution as necessary.
3. Reduce volume changes at the point where the figure passes from one hand to the other.

Ear task: Play each harmony once as a block chord before breaking it up.

Transfer: Analyze the harmonic shapes in four bars of Bach’s prelude and practice the real repeated figure.

Drill checkpoint: The crossing of responsibility between hands is inaudible and the pulse stays consistent.