← Bach · Well-Tempered Clavier
Prelude 24 in B minor BWV 893
Book II of the Well-Tempered Clavier. Under its figuration, this prelude is 89 chord changes across 62 bars — ranked 18 of 42 by measured difficulty (advanced) in this survey. Played as block chords, it's a progression you can learn in an afternoon; the piece is that progression wearing sixteenth notes.
Practice this piece → Practice chords → Learn it section by section → Hear the harmony →
How it opens
The first changes are VI7 (B) · V7 (A#) · VI7 (B) · V7 · i · V7 (C#) · i · V7 — and the whole prelude keeps moving at roughly that harmonic pace.
What it leans on
Of 87 labeled changes, the harmonies that do the most work: i (4×), V7/III (4×), i7 (D) (4×), V7 (3×), iv (3×).
Free scores
- Blocked-chord reduction (MusicXML) — the harmony skeleton the player performs
- The prelude as written (MusicXML)