The short answer
A manuscript from 1722, a printed afterlife around 1800. Fugue No. 17 in A-flat major, BWV 862 (WTC I) is a fugue by Johann Sebastian Bach from the Baroque era. PlayPiano puts it at Level 8, an estimate.
- fugue
- Baroque
- Key of A-flat major
- gentle
Also known as Das Wohltemperierte Clavier I, Fuga XVII.
History
Fugue No. 17 in A-flat major, BWV 862 (WTC I) belongs to the first book of The Well-Tempered Clavier. Bach's collection fair copy is dated 1722. For many years its life was in manuscript: around 1800, publishers in Zurich, Bonn and Vienna/Leipzig brought competing editions into print. That long journey from manuscript to publication is part of this piece's wider history.
Sources
What to listen for
A cross-staff line opens the dialogue
The opening line moves between staves before its lower answer and later upper entries. Follow the strand without assigning every staff change to a new musical idea.
Upper entries fill the waiting space
Related upper contours join above lower motion and separated exchanges. Hear the new layer arrive rather than treating the earlier upper rests as missing music.
Recalls become more densely layered
Written recalls overlap lower sequences, staff transfers and upper chord combinations. Listen for the familiar contour within the fuller texture.
Independent responses settle on A-flat
Descending and chordal replies arrive at held A-flat support. Hear their separate motion gather into the final sustained sound.
How to practise it
Broken low outline before the higher entry; long higher tone across a low return.
- Sing and practise the four low notes first, then add the higher entry without inserting a break between them.
- Rehearse the overlap slowly and retain the higher sound through the low return, rather than releasing both together.
How hard is it
Sustained imitative lines demand differentiated voicing and coordinated articulation across the contrapuntal texture.
About this piece
- Licence
- Public Domain
- Source
- mutopiaproject.org
More by Johann Sebastian Bach
- Prelude in C major, BWV 846Level 4, estimatedOpen to everyone
- Two-Part Invention No. 1 in C major, BWV 772Level 5, estimatedWith Maestro
- Italian Concerto in F major, BWV 971: III. PrestoLevel 9, estimatedWith Maestro

