Bach's Chromatic Fantasia and Fugue is a virtuosic work characterized by its improvisatory fantasia section and its intricate fugal finale. It is renowned for its dramatic flair, harmonic daring, and technical demands.
Mastering the rapid arpeggiated figures and achieving clarity in the complex fugal lines are paramount.
Chromatic Fantasia and Fugue in D minor (BWV 903) is rated Henle level 7 of 9 — late advanced repertoire, roughly ABRSM grade 8 and above. In the RCM system it corresponds to about level 7.
You should be comfortable at Henle level 7 — meaning you can already play level 6–7 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Chromatic Fantasia and Fugue in D minor (BWV 903) lasts about 10 minutes.
Chromatic Fantasia and Fugue in D minor (BWV 903) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.